How i remove my big scar in my legs?

Have to: Please see your dermatologist or plastic surgeon for evaluation and to discuss treatment options. Scars on legs are difficult to treat.

Improve, not remove.: Scars cannot be removed but there is a large variety of techniques to improve their appearance, both surgical and non-surgical. They also improve with time. See a dermatologist or board-certified plastic surgeon to evaluate your options. Good luck!