The front quarters might milk a little after calving, or they might not produce anything at all. Impossible to say for certain until she calves and you get your hands on her. Back quarters appear to be OK, and she might milk enough out of the back two quarters to raise a decent calf, but it's hard to say. Did she look like this last year, and if so how did her calf turn out? 2nd lactation animals usually do better than first lactation so she might do fine with this year's calf if you keep her.
The unbalanced udder might be genetic; I've seen some who just had a poorly balanced udder from the beginning, or it might be caused by mastitis. I'm inclined to think it's the first case, and she just isn't built well, since the front and back quarters each are evenly balanced, it's just the udder itself (udder floor) that isn't level.