If we compare with Joker.
Joker gets around 390m in Europe, 80m in Latin America and 260m from rest of the world.
I would expect Batman get 275m from Europe, 90m from Latin America and 235m from rest of the world. So 600m i predict.
Batman always big in UK so 60m+ should be possible ( hopefully 70m+) and in Asia it should get better number than Joker. Also it probably will get better number in Brazil and Mexico than Joker.