Hard to tell but it doesn't look like it will buff out. The scratches, maybe; the chunks, I'd think not. You may get lucky though. You could wrap the rear section with some matte PPE but that is covering up the problem and not fixing it. Good luck!
Ouch..sorry to see this...Clearly, the scuffs are too deep to buff out...I would check salvage parts distributors online to see what it costs to replace....