I have pitted acne scars which aren't too deep but give and uneven texture would vitamin c tablets improve my scars and how much would treatments cost?

Get treated: I'm really sorry that your acne was neglected when you were growing up. If your were not treated because someone read "scare" stuff on the internet, it's regrettable. Vitamin C is worthless for this, but a dermatologist or cosmetic surgeon can work you over with a laser, fillers, etc., as is right for you. Some actors (Jet Li, others) keep the scars to look "tough". Your choice. Best wishes.