I think you are asking how long a vac/overwatch ban is? And its permanent.
no bro i download free cheat i use for 5h in the day and then i delete that one then i download another a free cheat can i get vac with that ?? plz answer me
Depending on how recent the cheat was released it might have been undetected when you used it if you are lucky, otherwise if it was detected expect a delayed VAC ban which lasts forever.
Strongly recommend against using public cheats, you are just asking for a VAC.