(This post is still a W.I.P.! Formatting of this post may change over time.)
Here are the things I'm currently doing to make this topic look prettier!:
(Winter Themed) Splash Art
Color Formatting

How does this work?
You look through this list, click on any links that interest you, and see what you can do to help!

The purpose of each job title:
Help Wanted!: Shows you groups who need your help!
For Hire: Shows you people who are willing to help within their skillset.
Test & Review: Links here send you to games you can test and review.
(Visual) Art: Showcases users that need some form of artistic aid. Excludes other forms of art such as music.
Code/Programming: Showcases users that need some form of coding aid.
Music/SFX: Showcases users that need some form of musical/SFX aid.
Writing: Showcases users that need some form of writing aid.
Misc.: Showcases projects that allow you to easily help another user without spending too much of your time!
Trivia: A place where I put things I think you'd find useful.

Help Wanted!:
Work for Yellowfox555's Studio!: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/784228/
Work for Frostflame Studios: https://scratch-mit-edu.ezproxy.canberra.edu.au/studios/35798595/
Work for “Fun Shooting Game”: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786280/

For Hire:
(Playtester, Artist & Coder): Alexa-The-Explorer: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786216/
(Collaborater): EA Sports College: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786103/
(Voice Actor): AmberRose01: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786070/

Test & Review:
“Pause to Play”: https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/896204757/
“DUEL!” (2 Player Game): https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/1029669782/
“The Forbidden Frontier”: https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/1077066163/

(Visual) Art:
Art & Code Needed for “The Oscar Lands (2027)”: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/746677/
Art & Music/SFX Needed for “Another OS (Just Another One)”: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/770174/
gamesquad186 Requesting an Artist/Animator: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786182/

Code/Programming:
Coders Needed for “Battle Cats Island”: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786179/
Art & Code Needed for “The Oscar Lands (2027)”: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/746677/

Music/SFX:
Art & Music/SFX Needed for “Another OS (Just Another One)”: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/770174/
lemonbasil Requesting Music Conversion for Animation Meme: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/786526/
thecoolmantv2 Requesting Music for RNG Game: https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/785893/

Writing: N/A

Misc.
Watch a Heartwarming (Comedic) Movie: https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/1083610316/
Watch a Short Comedy: https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/1086849759/
Add Suggestions to jcisawesome4's game!: https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/1087053765/
Add Suggestions to “Missile Dodge”!: https://scratch-mit-edu.ezproxy.canberra.edu.au/projects/1074968353/

Trivia:
Hosting a contest that includes prize givers may not be frontpaged. (https://scratch-mit-edu.ezproxy.canberra.edu.au/discuss/topic/784707/)
Want help with scripts? (Politely) ask Jareddddddd!
Have you tried Scratchify? (Spotify on Scratch)
I take all of my links from Scratch's forums: Show and Tell, Project Ideas, Collaboration, and Requests.
To ensure you get a response back, try to comment on a user's profile/projects. Scratch forums won't always notify you of a new post.
Sometimes, I'll save a link to a project that actually isn't hiring or an old post from a year ago. Please notify me of these accidents so that I can fix them!

Note: Application Form is a W.I.P.!

Application Form for Weekly Listings (Put “N/A” in any fields that don't apply to you):
Direct Link to your Project/Studio/Forum:
What is your project's name?:
What does your project do?:
How are you contributing to your project? (For example, “I'm a lead coder”, “I'm one of the storyboarders”):
What kind of help do you want? (Collaboration, Review, Art, etc.):
Is there a specific amount/type of people you're looking for? (For example, “I am looking for 2 artists, and 4 coders!”):
Is there an application form? (If yes, send the link):

-Reserved-

How do I apply to add a listing to the for hire section?