It is a bit more complicated than that from what I have read. Trump cannot pardon state crimes, and he's on the hook himself for a bunch of those, nor can he pardon anyone implicated in a crime he is a party to (which is all of them). Trump quitting and having Pence blanket pardon him would also be legally challenged. I have no doubt if he looses he'll try some shenanigans and will appeal it up to the supreme court. That's why the future makeup of the supreme court, soon to be 6-3 in his favour, seems like his best way out. However, if the Dems win the senate even that escape route will quickly be closed. I could see this dragging through the courts for years.
Honestly, I predict a riot in November. A big one.