In the Leaderboards, you can see your general score. There are two types of Leaderboards - Local and Global. 

 

Local is a Leaderboard among all the players from your country, while the Global is the Leaderboard among all the players that have updated the game to the newest version.

 

Your score is calculated as the sum of all words you have guessed during the gameplay. To increase your score, be sure to complete levels in Travel mode, pass the Takeaway and Top Chef modes, and accomplish the Daily Challenge.

 

All the words that you have revealed are counted into your score. Increase your score to upgrade your League.