When I get another pair of sugar gliders, I can't let them out at the same time as the current pair I have can I? They will fight right?

I don't know to much about them but I asked a similar question from what I understand if the males are fixed it might take them getting use to each other but they can get along if there are males not fixed they will fight no stopping it they will hurt each other

If they are not introduced to each other and especially if there are unneutered males involved, yes they will fight.