Once you've played a song, or a part of a song, you can check how you did from the song summary screen.
The stars and score are awarded based on how you play. Stars range from one silver star all the way to three gold stars. To earn gold stars, every note needs to be played correctly with good timing.
The top right hand corner shows your score. If you want to find out more about how the score is calculated, you can do so here. To compare your scores to other players, tap on your song score to access the Leaderboards.
You can keep track of your Daily goal progress from the summary screen as well. Depending on how you played, you have the option to replay the song by tapping on Play again or Practice. When you see the Continue button, tapping it will take you to the next task in the mission. If you liked the song you just played, add it as your Favorite. Tapping the More options button, gives you the opportunity to check if other versions of the song are available. You can also access chord diagrams for ukulele and guitar songs that include chords.