I’m Melissa, a Shopify Guru. Thanks for posting.
So for each dropshipper of if you are using just the one supplier, you should be able to see their policy and get access to it. You can then make yours similar to include all the relevant information needed for returns, refunds, and privacy. There's actually a cool tool within your Shopify admin to help: It is a policy generator in your admin.
Check it out with this guide to help you get that set up on your online store: https://docs.shopify.com/manual/sell-online/checkout-settings/refund-privacy-tos
Hope this information helps! You can reach out to the Guru team https://docs.shopify.com/support if you have any questions.
Have a great day!
Melissa | Shopify Guru