it looks like something caused by the door being mashed inward [at that dent point near the latch?] while the check arm folded backwards - do you have the check arm from that door? damaged?
the bolt holes on the top of the door where the check arm attaches and a point just below the top of the window will be the 'quadrent' the straightening force is needed, but I'm not enuff of a bodyman to say just how to go about it

I'd be inclined to replace the door

and don't lose track of that license light/holder I see in the back, they're real hens teeth

and to see the full size, one needs to right click the pics and select 'open' or 'view' ....
here's the relevent oneBill