If you want to hide multiple fields, you can use the same unset function for each field you want to hide.
4 . Save Changes:
After adding the code to your theme’s functions.php file, click the “Update File” button to save your changes.
5 . Check the Checkout Page:
Visit your WooCommerce checkout page to see if the field(s) you wanted to hide are no longer visible.
Please note that customizing WooCommerce functionality should be done carefully, and you should have a basic understanding of PHP and WordPress development. Also, keep in mind that WooCommerce and WordPress frequently receive updates, so be prepared to update your custom code accordingly to ensure compatibility with future versions.