How to get high score in sololearn courses,please?

Answer 1

@Zeinab it is because they play challenges.
Winning challenges in a particular language increases your xp for that language.
unlocking badges also increases xp.

Answer 2

Answer the questions in 1 try!
[ without using hint or unlock ]

Answer 3

l realy do that as I know these courses before but I found other guys who got very high scores