points - member points if that is what you mean - are accumulated by posting (such as this) information to other users.

     Keep in mind, some users seem to think that their self-worth increases with a greater number of pointless posts, but they persist in producing superfluous posts anyway.

    others provide pertinent and valuable information to users.

regards,

http://support.chess.com/Knowledgebase/Article/View/16/13/how-do-ratings-work
http://www.chess.com/article/view/chess-ratings---how-they-work