Red scars can be treated with laser or IPL. Hypo-pigmented scars are not treatable but may improve over time.
Scars on the face and pigmentation can be treated with a combination of lasers like fraxel or clear + brilliant, skin care, radiofrequency treatments like viva, skinfinity, intensif and microneedling/PRP. please see an expert for long term maintenance. Best, Dr. Emer.
Your options include excision however your excision that would need to be done would be quite large. Basically for any sized lesion or scar your excision needs to be an ellipse that is basically two times the length of the scar. As you can imagine with your scar it would be a pretty large excision or area to cut out. So what are your options that are not excisional based. You can do a combination approach of laser resurfacing as well as a multi-layered approach treating the deeper parts of the scar. We do have an approach that can help this called the Acne Scar Vitalizer Treatment.
I would see a Derm or Plastic Surgeon. It should be treated with topicals. Retin A, maybe a scar cream. I like the SkinMedica Scar Recovery Gel. Sometimes lasers might be needed but I don't think in your case.