TÜV-Relevance Damage

Hello together, I had a wild accident with my A3 and, while avoiding the guardrail with the left side of the vehicle. At first I thought to sell the car, but I am attached to it and would like to have it repaired after all. Unfortunately, I took 4 months for this decision (used only as a second car) and now the TÜV has expired. Can you assess whether the damage prevents a certification of the test plate? I would be in front of the TÜV Unte search the headlights at the front and at the back, as well as the front fender the bumper at the front and at the back and the bonnet. Remain the side wall left… nothing is missing, but the wheel is no longer completely covered. What do you think a repair of the rear fender costs (without painting)? Do you have to cut the side part out or can you repair it? MfG