Final answer:
The quotation means that Scout and Jem do not care about integrating into Maycomb County's society.
Step-by-step explanation:
The figurative language in the quotation means that Scout and Jem do not care about integrating into the society of Maycomb County. Aunt Alexandra fits perfectly into Maycomb's social structure, represented by the phrase 'like a hand into a glove.' However, Scout and Jem do not share the same interest or desire to conform to the expectations and norms of Maycomb's society, symbolized by the phrase 'never into the world of Jem and me.'