Unlocking 3 Movies Mode:
1. Progress through Story Mode: You need to complete a certain amount of Story Mode. It doesn't have to be 100%, but you need to get fairly far in the game.
2. Beat the "Dragon Ball" Chapter: Once you've progressed through Story Mode, you will need to defeat the final boss in the "Dragon Ball" chapter. This usually occurs after you've finished the Frieza Saga.
3. The "3 Movies" Mode will be unlocked: After beating the "Dragon Ball" chapter, the "3 Movies" mode will be unlocked in the main menu, allowing you to experience the events of movies 7, 8, and 9.
Important Notes:
* You can only access the "3 Movies" mode after completing the required Story Mode content. There's no workaround or cheat to access it earlier.
* The "3 Movies" mode is a separate experience from Story Mode, offering a different perspective on the events of those movies.
If you're still having trouble unlocking it, double-check your Story Mode progress and make sure you've defeated the final boss in the "Dragon Ball" chapter.