If you are a researcher who found a technical exploit in the game's code, submit a report via the Roblox HackerOne program to be eligible for potential rewards.
If you have encountered someone using these scripts or have found a script yourself, you should report it immediately. Report a Player In-Game: MAD CITY INF CASH SCRIPT
Open the in-game menu by clicking the at the top left. Go to the Report tab. Select the player you suspect of exploiting. If you are a researcher who found a