Hw do i become a contributor coder nd challenger

Answer 1

10 challenge wins = 1% challenger
1 code with 5 likes = 2% coder

Not sure about contributor, but I think it is 1 post with 5 likes = 2% contributor

Answer 2

by asking and answering questions
by publishing your code
by winning your challenges

Answer 3

If you're talking about Solo Learn skills:

To become a contributor: Asking/Answering questions and having good reputation in that
To become a Coder: Post your codes and having good reputation on them
To become a challenger: Start challenging and winning in your favorite weapon (language),