The most likely answer to your multiple questions is yes your scarring usually can be improved. Best advice: seek consultation from a board certified plastic surgeon
This should be doable with an in office treatment. Either a bit of fat or tissue can be added, or some skin can be excised, or both. Also we could consider a "v to y" advancement. Again, all are office procedures under local anesthesia
Unfortunately, your photograph is very limited. I would need photographs showing your nose as well as your lips. There is a technique called the eccentric lip lift and does 4 things: shortens the distance between your nose and upper lip, increases the mucosa of the upper lip, increases the...