You have a game ban, not a VAC ban.
A game ban could be for cheating, or it could be for some other violation. It's up to you to figure it out.

Originally posted by R_12:

VAC
Why block me

1 game ban on record | Info <----------
0 day(s) since last ban

first things first, you have a gameban and not a vacban. Now, seeing you are asking such a question, here is a simple straight forward answer for you, go to your profile, see that ban of yours, see that "info" next to your ban, click on it, it will give you information for your gameban. If the ban is for CS2 or pretty much any valve game, then it can be given for one of a few things and its permanent. FYI this is a community only forum and not an appeal forum or asking why you got banned forum