How to Repair my Dropped Refrigerator
It's hard to say if this will ever close right from the picture, and given how old the question is, I'm guessing you've repaired or replaced it by now. But for those that encounter this issue in the future, doors themselves can warp and be easily unwarped.

You need to loosen the screws hidden under the gasket of the door, and with them loose straighten the door. This is typically done when the top or bottom of the door closes before the other so the gasket doesn't seal, so I'm not sure how well that will work if a corner is high rather than not closing. When re-tightening the screws, start with the 8 screws closest to the 4 corners, and then double check your alignment (you can make small adjustments still) before tightening the remaining screws.