Injectable fillers can only achieve a minimal increase in the vertical height of the vermilion of the lip. A more significant change in the height of the upper lip vermilion requires a subnasal lip lift.
Thanks for your photos. You say that you'd never noticed it until someone pointed it out to you. If you look back in your old photos (before you knew you had the bumps), can you see them present there? I think there are several good options for removing or camouflaging them....
There is no surgery on the lips to correct mouth incompetence. You need to be evaluated by a craniofacial surgeon to evaluate the boney structure. Mainly the maxilla. the mandible and evaluate the bite. Then a recommendation can be done.