What evidence of 2020 voter fraud did a court disprove? You do realize that there are dozens of types and hundreds of examples of 2020 voting fraud that have never yet been realistically refuted? Are you suggesting that courts examined all the evidence and found all voter fraud claims to be baseless? I don't believe such a court exists that could have even begun to do that.
Double voting
Illegal immigrant voting
Felons voting
Fake voter registrations
False impersonations of voters
Ballot box stuffing
Alterations of vote totals
Vote buying
Destruction of ballots
Fabricating fake ballots
Destruction of computer images
Ballot cracking
Fake signatures
Missing voting machine tabulators
Ballot Harvesting
Voter intimidation
Out of state voting
Ballot shredding
Postal fraud
Missing chain of custody documents
Backdating ballots
Ballot trafficking
Finding missing ballots after deadline
Bloated registries
Rigged vote counts
Biased adjudication of ballots
Banned observers
Violating election laws
Secret ballot counting
Illegal counting delays
Computer hacking
Unsolicited absentee ballots
Vote flipping