Paint damage New car and maintenance of new car paint

Hello everybody, I’ve been a silent reader for weeks and would like to speak. I’m getting the crisis. I unfortunately set my exactly 2 week old car against a parking pillar. OK soo it doesn’t really look bad either, but it’s enough to have it painted on a large scale for about 400 euros. I have a few questions: 1. If I have it painted, you can see that it was painted, so a professional can see a color difference. fi by measuring the paint thickness find out that what was painted? (leasing car) 2. May I wash the paint directly after the paintwork (by hand) and preserve it? General question about the new car paint: 3. The car was delivered conserved by BMW. Now I would like to use a quick wax over the winter to bring the car over the winter. Which one you can recommend. But I don’t want to have to re-integrate it all the time before and then after every W wash a quick wax? Doesn’t the Quick Wax always have to be tailored to the “main wax”? Thank you very much