Answer 1

Hey there Cupcake,

Just complete challenges, courses/lessons, code coach, and so on.
You need specific xp (user experience) to level up, you find more info in the linked code or in the official FAQ of SoloLearn:
https://www.sololearn.com/faq

https://code.sololearn.com/WdnjNR74ydO0/?ref=app

Hope it's helpful :)

Happy coding 😃✌🏻