For each game won you get three points, for a draw one point and for a game lost zero points. The points earned in online mode are counted for the leaderboard. 

In offline mode, the games are recorded in the statistics as won or lost, as well as the points earned in the games are listed.

In addtion, the statistics give you have an overview of your already played online and offline games.

Note: With the update to version 3.3.14 and the new online mode, no changes were made regarding the scoring.