Hello,
01. Navigate to WooCommerce > Settings > Advanced > Page setup, and assign your “Refund and Returns Policy” page to the Terms and Conditions field.
To change the text, try to use the Loco Translate plugin to change that text.
Please follow this guide: https://xtemos.com/docs-topic/translate-woodmart-theme-with-loco-translate/
02. To hide the ship to a different address, navigate to WooCommerce -> Settings -> Shipping and click the Shipping Options tab.
Select the option Force shipping to the customer’s billing address. https://ibb.co/hxkkBsyw
To adding custom text, Try using the Theme’s Layout Builder you can create Custom Layouts for WooCommerce pages like Shop, Category, Single Product page, Cart and Checkouts. So, you can use that to create your own custom layouts for these pages.
Further, you can read more about the Layout Builder here: https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
Best Regards