Are you implying Gore winning would've meant 9/11 wouldn't have happened?
Even if it had happened, the response would also have been different.
If I had to guess, I'd say at least no Iraq war, if we consider that part of the response. Patriot Act probably would have looked different. I expect there still would have been military action in Afghanistan, but likely with differences as well.
As Gore came from the Clinton admin he and the people around him would have had a lot more experience dealing with and familiar with the threats and actors, who were already known.
https://en.wikipedia.org/wiki/September_11_attacks_advance-k...