In order to submit your app to Apple, there are a few required links you must add to your App Store Listing. One of these links is your Privacy Policy. If your store does not have a privacy policy, Shopify has a generator that will create one for your brand.
Here are the instructions:
Step 1: Go to Shopify's privacy policy generator
Step 2: Find and check the box that states "I'll skip the Shopify trial for now. Just create my policy."
Step 3: Fill out the required information.
Step 4: Once your Privacy Policy is created, you will want to create a new page within your website and link the Privacy Policy to the footer of your site. Now that it is linked, you will add that URL to the App Store Listing on your dashboard.
Congrats! You now have a Privacy Policy for your store. Shopify offers many free tools for store owners. These can be found here.