Hello,
You can delete or edit Shipping and Delivery in the Theme Settings > Product page, you will find the option to edit or clear the fields: https://gyazo.com/6fa3c88a8d120281abc2519fad263cc3
You can change the font by means of the Advanced typography option, which allows you to choose the item from a drop-down or insert your custom CSS class. Please navigate to the Theme Settings > Typography > Advanced Typography.
Here is the documentation providing more detailed instructions: https://xtemos.com/docs/basel/advanced-typography-settings-2/
If you have any questions or need further help, please feel free to contact us.
Best Regards