There are several treatments from over-the-counter creams to surgery, depending on the severity. Collagen injections can be given for pock-marked scars, and dermabrasion can also help by resurfacing the skin.
There are many different ways that may help clear acne scars. You could try rubbing them with ice cubes or even massaging olive oil into the area. You could also try massaging honey into the affected area. You can also try rubbing on aloe vera juice or gel.