For a more detailed explanation as well as references/guides, check out the Merch Bridge section in our developer documentation.

The Manifold Shopify Merch Bridge

​Merch Bridge allows you to offer exclusive items and discounts to NFT holders via your Shopify store. We currently support ERC-721 and ERC-1155 tokens on Ethereum and Polygon.
The Merch Bridge App is a solution for stores that already have an existing storefront or that are looking to set up a standard storefront experience. The Shopify Merch Bridge App allows configuration of NFT-gates at the product level and leverages pre-built widgets to add "Connect Wallet" and "Add to cart" buttons to specified product pages automatically. Customers experience the same smooth checkout they're used to for non-gated items and can fill their cart with gated and non-gated items to checkout all at once.
If you're running into issues setting up the merch bridge, check out some common questions here.