You can change the Primary Font and Font size of your website using this settings panel.

Please follow the below video or the following steps to change Typography:

Note: The body fonts are the fonts of the entire website. However, the Heading fonts will be displayed in single post/pages.

• Go to Appearance> Customize> Typography
• Select the content type to change its typography
• Configure Font family, Font Style and Font Size.
• Click on Publish