When they say zip up the project do they mean a build or all the files assets ect raw (like all music models ect free to view and edit or steal if wanted)
The project folder, yeah. Not a build of the game.
ok and is unity admins the only ones with access to it as i dont want try get intrest using union only to find my work gets stolen by big company xyz
Unity could be the big company, XYZ. 
I’d read the contract before submitting any of my work to be honest… all million pages of it.
Its pretty trivial to rip the assets out of an actual build of the game anyway, I wouldn’t worry about it.
This is true of almost all games, not just Unity (although the proverbial fruit does hang especially low to the ground in Unity’s case).