YouTube Shopping lets customers buy your products right when they discover them. You can select which products to display to your customers while they watch your business's videos on YouTube.
If you have Buy on Google set up, then customers in the United States check out directly on Youtube. If you don't use Buy on Google, then customers in the United States check out on your online store.
You can manage your YouTube Shopping orders, returns, and payments in your Shopify admin. For more information about YouTube Shopping, refer to Get Started with Shopping on YouTube on YouTube Help.