All I know about Hunter Biden is that he had some pretty damning activity that the media faithfully refused to report, and big tech dutifully censored. Exit polls of Democrat voters found that only 45-50% of Biden voters in swing states knew about Hunter's activity and Biden's likely involvement or at the very least obliviousness to major corruption, and anywhere from 7-10% said that had they known, they wouldn't have voted for Biden.
7-10% of a hit to Biden votes would have put Trump in the white house easily.
The election wasn't "stolen" by votes, it was purposefully influenced by political activists who hold positions of power in media to manipulate the populace. Leftist activists in media and big tech "meddled" in our election process. All of the things they accused Russia of doing in 2016 they did, but infinitely worse.