There won't be jail time because it would look bad politically. Although, Trump would be a lame duck president after the election, so he could do whatever he wants.
Democratic Presidential Nominee Joe Biden said GOP Sen. Ron Johnson, whose Committee Investigated Hunter Biden’s Business Dealings, should be “Ashamed” for claiming that Biden and his son profited off the Former Vice President’s Influence. Liar Liar Pants on Fire ! Not Just A Claim But A Statement of Fact.