I’ve been considering the election ending at SCOTUS and I don’t see the President having votes invalidated and not counting thousands of ballots and winning that way.
I think instead what will happen is that SCOTUS will invalidate some of the states elections due to rampant fraud so that there’s no way either candidate can get to 270 then it goes to the house based on this info in the Atlantic article.
https://www.theatlantic.com/ideas/archive/2019/07/what-happens-if-2020-election-tie/593608/
What Happens If the 2020 Election Is a Tie?
The House of Representatives resolves inconclusive presidential elections—and while Democrats may hold most of the seats, Republicans control more state delegations.