Once you finish playing a song, you get access to the song end screen. You can view your song score and access the song leaderboards.
How song score is calculated
If you play a song more than once, you see two different scores: Your score and Your best. Your score is the number of points you received for the most recent play of the song. Your best is the combined score from all of your previous plays.
As an example, you finish playing a song and receive Your score of 51,000. Your best score for the song is 59,000. The Your best score is the combined score. It is the sum of the best scores achieved, for each part of the song, from all previous plays. This is the score you see on the song leaderboards. Next time you re-play the song, the score visible at the start is the Your best score.
What are song leaderboards
To access a song leaderboard, select the Leaderboard button located in the top right corner of the song screen. The leaderboards include scores from other players, and you can toggle between My level, Global and Friends views.
Weekly challenge leaderboards
If you play a past Weekly challenge song, your score is saved but the Weekly challenge leaderboard is not updated. You can view your score for the song from the song end screen.