This is another question about How to Kill a Mockingbird that a lot of people like because of the lessons that it can provide. Scout learned who his protector was when she sees Boo in the corner of the room. She recognized Boo the moment that she saw him. There are different things that Scout learns in the story.
This is not only about those who protected her. She also learned more details about perspective and how she can develop her morals based on what people’s perspectives are, as well as her own. Scout realized through what Boo did that she cannot judge people based on the rumors that she has heard about them in the past.