I scraped my leg and i think it's infected the scap has turned a white/green and it hurts to walk. what can i do to heal it?

See your physician: This could be infection and even MRSA. See your physician, get a culture and specific antibiotic treatment.

Picture?: Where was the scrape? When did it occur? How did it happen? What object caused the injury? What have you done for it so far? A picture would be very helpful.

Get evaluated: Your symptoms suggest a worsening of your condition. It is best to be seen by a health care provider for further assessment and potential treatment.