If he can do that through recounts/court orders in each of the swing states he can win the election. I just hope the system holds and gives Biden at least a chance.
So far the system seems rock solid. That's his problem (I wonder if he believed his own hype ?).
I would be amazed if a recount didn't produce a few votes either way. But that in itself is proof of nothing.
Honestly, if you wanted to rig an election, you really, really, really don't start with the vote count. You need the vote count to be beyond criticism to cement your victory.
If you want to rig an election you start by gerrymandering and losing peoples registrations - exactly like we do in the UK.