Using scripts is a violation of the Roblox Terms of Service . Pet Simulator X (and its successor, Pet Simulator 99 ) has anti-cheat systems that can result in your account being permanently banned.
Scripts like the one described often include a "Hub" (a menu) that allows players to toggle various cheats: [NEW] Roblox | Pet Simulator X Script | *Alot O...
Automatically buys and hatches eggs as soon as you have enough currency. Using scripts is a violation of the Roblox Terms of Service