I don’t have any good news for you I’m afraid. I had similar damage to my car, also needed a headlight, a new bonnet and wing. My car went to Mitchell Ingles who are Tesla’s approved repairer in Glasgow. My accident was on the 1st November last year. I got my car back on the 12th April this year. 5 1/2 months later. A lot of parts are back order from Tesla. If you look in Mitchel Ingles car park you will see a lot of accident damaged Model 3’s that have been sitting there for a long time. You might be lucky if the bumper and associated parts for your car are available but best to be prepared for a long wait. Anything less than a couple of months would be a great result. Good luck.