Ah ok – so theres a few ways to go about this.
Lets look at the Post Meta such as the Date and Author.
To begin there is no dedicated Typography setting for them, as there are so many permutations.
But you can Add Typography and Choose: Custom
This will provide a field for: Enter custom CSS selector
And here you could add:
.entry-meta
And now you can create your own custom style for any of the entry meta used across the theme.
This allows for more flexibility for example you could do:
.single-post .entry-meta
to only style the single post meta
.single-post footer.entry-meta
to style the single post footer meta ( where categories tags and terms reside ).
Theres a tonne of options.
ALTERNATIVELY – you can use a Block Element, to build your own template parts eg.
The Post meta template: https://docs.generatepress.com/article/block-element-post-meta-template/
The entire content template: https://docs.generatepress.com/article/block-element-content-template/
With that method you can restyle the entire element π