If you want the dent to be fixed, it could be worth filing a car insurance claim. If another party caused the damage, you could make a third-party claim with their insurance provider so that it’s covered under their property damage coverage.
If the damage was your fault or the fault of a noncollision event like hail, you could make a collision or comprehensive claim. However, you’ll have to pay your deductible, so if the repairs will cost less than your deductible, it’s probably not worth it to make a claim, as it’ll make your rates increase most likely.