Remove Site Title and Tagline from all pages but Home

Best thing would be to hide it with CSS.

Can you provide a URL to your site, please?

A more robust solution would be to edit the page template file and remove it there. Then save as new template and choose this as template for the corresponding pages.

– Don’t edit the theme files directly, otherwise your changes will be overwritten whenever the theme is updated.
– A custom CSS editor (usually titled Additional CSS) is included in the Customizer as of WordPress 4.7 specifically for this purpose.
– As an alternative, especially if you intend to modify more than just CSS, create a child theme.

Here’s the link:
https://bhx.1b5.myftpupload.com

I’m unsure of how to make a child theme or to edit the page template…pretty new to WP.

Guides on how to create a child theme:
https://developer.www.ads-software.com/themes/advanced-topics/child-themes/
https://www.wpbeginner.com/wp-themes/how-to-create-a-wordpress-child-theme-video/

And you will find more resources if you search google.