VP Harris is singularly unimpressive in my opinion, and not due to race. Remember, I vote Obama twice and not sorry about either time. She ain't Obama, by any means and he did not look prepared, either. He was just Running against McCain, riding the sentiment of the Bush crash and all of us the lost our jobs, with the factory shut-downs, dramatic losses of 401K and other investments for retirement, plus he was saddled (for God knows what reason) with the crazy, amateur "Thrilla from Wasilla".
On paper, she was indeed higher qualified than Trump was on his first go at the Executive Branch, though without the charisma and attraction of the nut-ball fringe. I think Biden's campaign influencers picked her as the "token" to garner more solidly the "Black and Minority" vote, though you may think she hung the moon. I don't know.
Her problem is, her judgement and lack of self-control were shown early, even before the election, during the primaries. She made racial bigotry statements against the man that would beat her easily in the primaries, before agreeing to be on the ticket with the man she did not approve of. That does not say much for courage of convictions, judgement or character, simply someone looking for a hand up. To me, she is still not to be trusted with the job. Four years is a long time, and at Joe's age, things can happen. None of us are getting out of this, alive. Still, at this point, I am forced to vote for the Biden/Harris ticket (regretfully) again, to keep the Un-American, anti-constitutionalist, Anti-Rule of Law, supporter of autocrats, strongmen, and Communists alike, out of the White House. So, we still have a democratically elected representative republic, 5 years from now.