Delle/Boule in the threshold

Good day, I saw today after the visit at the hardware store a dent on the left sill. Where this comes from is a good question, but not the main focus of this topic (I suspect curb, i.e. self-inflict, but then the whole thing would have pulled on the whole sill, instead of leaving a bump on the spot?) Now I wanted to ask, is something so important to treat, so I mean, “why” would it not allow this to be done the next few months. t I know are sills carrying components and also has a lot to do with rust protection and galvanizing. But as long as I don’t do anything about it, the sealing should still be intact, right? Maybe someone could tell me what costs I have to reckon with to have this repaired? Tomorrow anyway will look again at a paintr and get me a quote. The vehicle is about a Honda Accord (8 Limousine)