If Biden loses, I think there's a case to be made that he blew it in his first year in office, not because he did so much he didn't get credit for but because he didn't do anything to stop Trump and alter this country's political trajectory.
The baffled and helpless reaction to Dobbs in 2022 probably buried Biden for good. While people turned out for Democrats in the midterms because of abortion, I doubt it does Biden any good because he's been AWOL on the subject.