There's probably a shit ton of nazis in Valhalla. Vikings didn't have any sort of morality about human rights, they went by might makes right. If you died in glorious battle, no matter the cause, you're going to Valhalla.
So there'll probably be a shit ton of nazis from WWII, along with russians and Americans who they fight an unending war with.
Modern nazis arent really dying in glorious battle, if they do die in battle it's after shooting a bunch of defenseless people before being sniped by a cop, not really that glorious. Most of the nazis though are just posting edgelord shit online and are just as afraid of daylight as they are brown people, no Valhalla for them.