From the typigraphy option, you can set the typography of the following section-
Set the type scale for text and body and set the global font family, variant, size, line height, letter space, and word spacing. You can also set the typography for the heading sections too.
Control the font settings for the site title and tagline from this option.
Set text heading typography styles individually for all the text heading options, You can set different typography styles for different text heading tags.
Similarly following the same process you can set the typography style for the main menu, sidebar, and footer section.