How could i stop exploiters from stealing scripts and my game?
Turn on filtering enabled. You can do this by going into studio for your game. Make sure explorer and properties is on, then click on Workspace with explorer and in the properties section, you will see something called 'Filtering Enabled'. Make sure that check box is ticked. This will also remove that 'Experimental Mode' icon in your games.
This website is very helpful! https://en.help.roblox.com/hc/en-us/articles/115003766763-Experimental-Mode