This is/was all a sham. If there was any proof, Trump would have given it to his legal team so that would have a chance of winning in a court of law.
As it is, even if he has “proof”, most if not all states have certified the elections, the lawsuits have been dismissed with prejudice (meaning that they can’t be re-litigated), and he doesn’t have any legal avenues to display this “proof”.
And he can’t bring the “proof” to the Supreme Court, because the issues have to have been litigated at a lower court to even make it to the Supremes.
Bottom line – this is a big long drama that feeds his delusional ego, and does nothing for the country.