Here's what we can infer:
* Scout enjoys the library: She visits the library with Miss Maudie and enjoys the books, especially the ones with pictures. This shows an interest in the knowledge and stories contained within books.
* Scout's focus is on content: She's more concerned with the story and the characters than the organization of the books themselves.
* Scout is a curious learner: Even if she didn't understand the Dewey Decimal System, she would likely be curious about how the library was organized.
Overall, it's safe to assume that Scout wouldn't have a deep understanding of the Dewey Decimal System, but she would appreciate the library and the stories it holds.