The trouble is,is there is no Constitutional path to do that through the courts. And no path to holding a “redo” of a presidential election, either, which Trump says is his second choice. The Electors voted, the votes were duly counted and recorded. End of story, according to the Constitution (which makes no mention of a popular presidential election).
AN obvious fake election was certified by the book.
If you prove fraud in a court of law, then you no longer have somebody who was chosen to be president using a constitutional path.
You have an installed president with an incomplete constitutional process, and an existing constitutional process that would need to be completed.
I have no expectations that will happen though.