If you are caught actively using exploits or purchasing bots through prohibited games, your account is at a much higher risk of being warned or terminated.
Generally, if an account suddenly gains a large number of bot followers without the owner's active involvement (e.g., someone else bots you), Roblox historically has not banned the receiving account. Roblox Followers Bot : (February 2023) (Working Bots Tips!)
Experiences like "Nexus Services" or "Social Sim" claimed to offer botting services where users could gain followers for staying AFK or spending Robux. If you are caught actively using exploits or
If your account has already been targeted by bots, you have a few options to clean up your profile. someone else bots you)
How to remove spam or bot followers on Instagram | Instagram Help Center