what is xp

Question

I want to unlock but there are no enough xp

Answer 1

Here are some already asked questions so challenge is the way to earn xp fast or you can unlock the badge by completing their requirements
https://www.sololearn.com/discuss/591296/?ref=app
https://www.sololearn.com/discuss/576250/?ref=app
https://www.sololearn.com/discuss/508503/?ref=app
https://www.sololearn.com/discuss/594781/?ref=app
https://www.sololearn.com/discuss/341942/?ref=app
https://www.sololearn.com/discuss/265734/?ref=app