If you don't want to do all of it, one or two parts are fine:

Character designs
Thumbnail
music and sounds
character movement scripts
character fighting scripts
enemy designs
item designs
pick up item animations
weapon designs
character voices(optional)
level designs
hitboxes
animations for other stuff

hello! I can make character designs!

for RPG stuff??

i can do character voices

ok I'll invite you then

What kind of project is it?
If it's 2D then I can do hitboxes.

I can do the thumbnail.

it is a Nintendo themed game.
but if you can do stuff that is Nintendo themed, than that would be great!
link to the updated forums post: https://scratch.mit.edu/discuss/topic/483626/?page=1#post-4875687