How to make saving unlock levels

Hello, I need your help please.

Problem saving with unlock levels in game instance…

The game must have an actor class blueprint end game on all levels, with open level → level select

The game should be
Level 1 → bonus
Level 2
Level 3 → bonus
Level 4…
Level 5
Level 6 → bonus
Game instance

Game instance save

Game instance load

Platform end game…

Menu levels select