I'm guessing this is your friend?
They posted and then deleted several questions. This type of behaviour is a pain, and can be a sign of spamming. The ban is automatic, and cannot be manually lifted. It will expire only once you've earned enough positive reputation to demonstrate your ability to post constructively. It is not a timed ban and it will not expire.
If your friend would like their deleted question undeleted so that they can fix them, I can do that, just leave a comment here.
If the same behaviour happens again and the auto-ban kicks in again it will be even longer, so take some time to properly research your question and make it a good one!
There are some help centre articles that can help!