If you are looking for an "auto-player" script to earn points for free items in the official game, these are usually shared on community forums like V3rmillion or specialized Roblox script sites. These scripts typically automate the "perfect" notes to maximize your points quickly.
You must first have a UGC Limited item published on the Roblox Marketplace. Robeats Free UGC Item script
It sounds like you're looking for a way to give out free items in your own Robeats-inspired game or through a special event. If you are looking for an "auto-player" script
Tip: Ensure "Allow Third Party Sales" is enabled in your game's Security settings. Option 2: The Player Way (Exploits/Autofarm) Robeats Free UGC Item script
Use the MarketplaceService to prompt the purchase of a 0-Robux item.