For those who have gotten their infinix zero 2 and wants to root theirs, follow this tutorial strictly to avoid stories that touch.
In case you don't know what rooting is, rooting simply means giving your android smarthphone super user privilege i.e operating beyond the limitations set by the manufacturers of the phone. With rooting, you can do a lot of stuff like changing your ROM, changing your fonts and loads of other sweet functions.
For more enlightenment on the process of rooting check this page out

Disclaimer: you are solely responsible for any damage that may result in the course of rooting your phone, however, you need not be scared if this procedure here is followed properly, you are good to go

So to root your infinix simply search for an app called kingroot on google or download here
Download another app called root checker on play store(This is just to test whether your phone has been rooted or not)

Launch the king root app but make sure you tick the "unknown source" box under your phone security setting, this is to allow your phone install the app.
once this done open the kingroot app and allow the app to analyze your phone(make sure your phone internet connection is on to allow this app work effectively), you will see something like this
After sometime your will see a green tick inside the green circle indicating that your phone has been successfully rooted.
Source:http://techstine..com/2015/06/how-to-easily-root-your-infinix-zero-2.html

Do you know you actually do not have to root your Infinx Zero2 in order to change fonts? Check this thread to know how.
https://www.nairaland.com/2407060/change-font-infinix-zero2