See this article to understand Store shipping rate Lists.
See this article to know how to create a shipping rate list.
To apply a shipping rate list to a product
- Go to the Ecommerce section
- In the Ecommerce section, click on the products link on the left-hand side. On this page, you would see the listing of all the products. Click on any product now.
- On the product edit page, you would see the shipping option on the right side. Select the shipping rate list that you want to apply to the product from the dropdown.
That’s it. Now, this product will pick up its shipping rates from the assigned shipping rate list.