Had surgery on my foot to remove a mole & went out into the sun without putting sunblock on and now I have sunburn on the scar?

surgical scar and it wont go away or come off! in other words the surgical scar got sunburned and i dont know how the sunburn on the scar will go away? what kind of treatment will make the sunburn disappear? im really upset about this! if a surgical scar was exposed to the sun and sunblock wasnt used, what kinds of treatments will only remove the sunburn if it the kind of sunburn which isnt going away or disappearing? can any doctor please tell me what to do? thank you.