I would bet that Jake Paul will last a maximum of 2 rounds, Mike Tyson is a legend, a boxing machine, his physical shape and strength at his age is impressive. I say again what I said in previous posts, I believe that Jake Paul will not be able to lay a finger on Mike Tyson. He will take a "perfect" from Tyson.
I would be willing to take that bet, I will give you 1:2 for that if you are interested. Yes, I agree Mike is a legend, no question about that but his age against a very active boxer, I doubt the will last. It's called an exhibition match for a result, Mike Tyson might not be KO, but his stamina will drop in the actul fight resulting to a loss in this fight. Bear in mind that Mike didn't retire when he was still winning, he retired because he was already losing his fights.
see the record
https://boxrec.com/en/proboxer/474