My mobile right hand side touch screen is not working

@rokesh sounds like a bad touchscreen. The touchscreen and the display are fused, so they need to be replaced together. Of course, try a reset first. Use Samsung's site to tell you how to do that.

If that doe3s not work, replace the display assembly. Since iFixit does not yet have a guide for that, use something like this video or use this guide to help you.

Displays are relatively inexpensive and are readily available at plenty of online sites. Just make sure you purchase one for your exact version.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!