You can offer a free physical, digital, or service product by setting the price to 0.00 or by creating a discount.
Note: Customers will always see credit card fields at checkout. If they're only buying a free product and shipping is also free, they can leave these blank, enter a billing address, and click Submit to complete the order. It isn't possible to disable the credit card fields at this time.
Step 1 - Add or open the product
If you're creating a new product, follow these steps to add the product.
If you're changing the price of an existing product, in the Home Menu, click Pages. Click a Products Page. Double-click a product to open the product editor. For detailed steps, visit Editing a product.
Step 2 - Set the price to 0.00
In the product editor, click the Pricing & Variants tab.
To set the regular price as free, click Price and set it to 0.00.
To make the product free temporarily, set the Sale Price to 0.00 and then check On Sale.
In your store, the product's price will display as 0.00 in your currency.