What he saidDepending on the mileage, year, and condition of the rest of it the insurance may or may not total it. There have been a couple of people on here that posted really bad damage recently that are getting their cars fixed with insurance that were not totaled out. Car values are so high right now that the totaling out threshold has been raised substantially.
You definitely need another quarter panel, wheel well, and passenger door or at least skin along with a rear bumper, corner tail piece, and any brackets and hardware. If you were to get a rear section cut out from a salvage yard then it would have the rear sheetmetal needed(quarter panel, wheel well, etc) at least but it still won't be a cheap fix.