How to root Samsungn Grand Prime SM-G531H

• Download This File And Extract
• Copy SuperSU-Pro-v2.46-Patched Zip File On Sd Card
• Restart in Download Mode. (Volume Down+Power+Home same Time)
• Open Odin And Connect Phone With Pc
• Locate recovery.tar.md5 File in download folder and start.
• After doing that Reboot in Recovery, (Volume UP+Power+Home)
• Slide in the twrp
• Flash SuperSU-Pro-v2.46-Patched Zip File
• Restart the System
• OPen PLAY STORE And Update SuperSU and restart again.

Your are rooted now.

For TWRP flash this file (download)