What can we do with XP?

Question

In this app there r point named as XP!!!

Answer 1

It stands for experience points you will earn it as your experience increase with your increasing level. You may come to the top of leder bord by gaining xp.

it is made by sololearn just for motivation purposes.

Answer 2

It's gamification. The concept is supposed to make things (e.g. learning) more enjoyable and give you a feeling of joy and achievement: https://en.wikipedia.org/wiki/Gamification