Go to Dashboard >> Appearance >> Customize >> Typography.
First of all Enable Typography Setting.
Base Typography:
- Font Family: Select the font family you want to use for all texts on the site content.
- Font Size: Set the font size for all texts on the site content.
Menu Bar Typography:
- Font Family: Select the font family you want to use for menu texts on the site.
- Font Size: Set the font size for all texts on menu texts on the site.
Headings Typography:
- Font Family: Select the font family you want to use for all the headings on the site.
- Font Size: Set the font size you want to use for all the headings on the site.