Within two weeks the election results in Pennsylvania, Michigan, and Georgia will have been certified. Within three weeks the election results in Arizona, Nevada, and Wisconsin are certified. When the election is certified then the electors are chosen. Trump's team is probably going to have to work faster than that.
If and when massive fraud is PROVEN, state legislators can deny certification thereby throwing the decision into Congress where each state’s delegation has only ONE vote.
The above is a statement based on what state legislators are discussing now, not a statement yet of decision, but one of capability.
In other words, there is a 2nd pathway that is under serious contemplation waiting on clear and unequivocal FRAUD proven to effect voter intent. This could be confiscation and presentment of equipment used in computer crime that causes legislators to go the 2nd pathway.
The takeaway is there are TWO pathways