What is the likelihood of being banned for a fake Xbox code?

So one from the darknet. I don't want to buy a thing like that. Can something like that come out and then be banned right away?

Don't do it because it is illegal to buy fake things on the internet. Do it even less because the question is on the internet and you can be found that way.

I think, since it's illegal, the probability for a ban is between 99.9 and 100%, they are really hard with something like that