I hope SCOTUS takes the case, but courts have a tendency to avoid really hot issues and I don't think anyone can predict what will happen. Hopefully, there will be a 5 vote majority that would find what happened in PA unconstitutional but we will have to wait and see.
The SC only grants certiorari where there a question pertaining to Constitutionality of a specific event or charge.
Voter fraud is a criminal offense and the SC will not entertain any such motion unless there is a clear question of Constitutional violation by the Government or its agents.