Answer
1) First make sure you are logged in when you are playing the game, so that we can record the score with your username.
(we CANNOT record your score if you're not logged in).
2) After you are done playing the game, click the
View All Scores button at the bottom of the
High Scores table (in the right sidebar). You will go to a page where you will see a list of all players of this game ordered by most recent. Your score should be on the top of the list.