Hello can you help me?

is that I need to know how to make a multiuser leardboard, that is, that in the initial tab that I can put my name, win the game with X points and after winning it take me to the ranking section automatically and this value of the score is saved, then that in ranking there is a button to return to Start, I put another name and at the end of the game I save it and so on with up to 5 users, would you know how to help me?

Read about how other developers handle leaderboards in their apps Search results for 'leaderboard' - MIT App Inventor Community using the links.