Hello, retard when it comes to cars here who only recently started

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3MB, 292x289px

Hello, retard when it comes to cars here who only recently started driving

My car has a long front end and in my stupidity I parked it a bit too far forward, which caused the end to go a bit over the curb. Someone must have hit the front while I was gone and of course they left before I could see who they were

So now there's a giant ass paint chip right on the nose of my car, about 6 inches wide and tall. What should I do about this? How soon will the metal begin to rust/oxidize?