==>PC with enabled internet connection
==>Patience in following
==>SP Flash tool
==>Download the ported TWRP for Infinix X600 here
==> Unzip the TWRP zip file and flash the recovery image to the phone using SP flash tool ( You can download SP Flashtool here)
==>Boot the phone into TWRP recovery mode (by Holding the Vol Up and Power button for 5 seconds)
==>In TWRP recovery, Choose install zip from sdcard- to Choose zip from sdcard use vol up and down scroll up and down then choose the Supersu.zip file from the root of your sdcard.
Scroll to yes and install, after a successful flashing go back and reboot.
You are now rooted! To be fully sure your Infinix X600 is rooted, go straight to Google Playstore and download root checker to verify your root status.
Are you still confuse? Ask your questions.