Just had my bumper repainted from a contracted body shop with the dealer. There was a scratch on the bumper when I purchased the car, so they had to repaint it for me. They didn't wash the car for me, and it's pretty dirt now. When can I wash it after the paint job? It's been about 4 days since it was painted. (metallic black with clear coat)
You'll need to ask the people who painted it because it depends on what they did post-painting to help harden the clear coat. It certainly wouldn't hurt to get water on it, so feel free to wash the rest of the car. Just don't be scrubbing on the bumper.
Feel free to wash your car whenever, it won't hurt anything. We try to wait 24hrs to wash a car after paint, but we've had extreme cases where cars were washed a mere 2 hours after a spray. You'll be fine. No degreaser, no bug remover, no tar remover, be careful with wheel cleaner overspray.. As well as tire shine sling as it may stain. Feel free to cut/polish the bumper as well, but try not to seal or wax it for a good 60 days ( since winters approaching). Keep it washed regularly to reduce bug splatter/staining, and it won't hurt to wipe it down with a spray detailer or possibly spray wax for a little extra protection.