Israeli Jews and Palestinians only had to be divided because the Israeli Jews were unrestrained in their wish for the whole thing, and their unsupported rage at Palestinians. Palestinians needed protection, and that protection would/should have come from their own state(s). Israeli Jews needed protection, too, but they got that from having Israel. Even Hamas leaders will tell you they have nothing against Jews or Israelis. Their complaint is against people who mistreat them and take their land.
Reparations are certainly, in theory due, but what kind and to whom? There's nothing Israelis or Biden can do to bring back to life the 40K (estimated as high as 186K) Palestinians the Israelis have annihilated, plus the aid workers, and the journalists, and the Palestinians who are being starved and deprived of health care, and will die. Certainly, all of their destroyed buildings and infrastructure should be rebuilt for them, settlements removed NOW, and they should be left alone and treated better. The Israelis clearly aren't motivated to do anything for the Palestinians, so who's going to make them?
Yes, I'm a citizen of the US. If you're talking about reparations here, to African Americans, I don't favor them. First, there's not enough money in the world we could give them to compensate them for what they and especially their forebears were put through. Second, if you're familiar with people like lottery winners and professional athletes, then you know that people who do not have a system for handling sudden large amounts of money generally lose it and wind up bankrupt, through lack of perspective, careless generosity to the wrong people, and "investments" in businesses they can't manage or which are scams. The best thing to do is make sure we're well educated about the problem, and stop mistreating them, which we haven't done.