You can only wear a maximum of 3 hats, 1 shirt, 1 pants, 1 face, 2 Arms, 2 Legs, 1 package, and 1 gear at once.
Builder’s club members can sell old shirts, hats, etc. and keep 70% of the profits. If you develop games on Roblox, you can use ads to make some in-game cash. [1] X Research source