I got hitted by edge of showcase on right side of stomach now there is redness and burising how can i get rid of it?

Redness and bruising is the natural sequence of Contusion (bruise) caused by blunt trauma to the skin. As in a Fall/Sport Injury that did not break the skin. However tiny blood vessels tear & leak blood under the skin (Black & Blue). If there is no significant pain its OK to Ice/ put Cold Compress to limit swelling, Rest the area and avoid Aspirin. It will resolve in 2 to 4 weeks or so by itself