I hv dark knee bt d skin is soft wen I wz kidfell on knee it bleed n GT brown wound wich I peeled by hand n new skin came is dark brown hw do I GT rid?

Postinflammatory pig. Dark color after any irritation or injury is very common. The darker you are, the darker the new skin on a wound. With time it will slowly become less conspicuous. If you care about it, keep the sun off it, avoid kneeling or rubbing it, and begin a fading cream.