Unfortunately, no it does not include the SKU function. If you want to use the SKU function, you will need to add an eShop to your Website Builder.
Website Builder does not have eShop (Shopping Cart), this is an addon you can purchase alongside your Website Builder plan. You can purchase and connect eShop to Website Builder any time within your Account Manager.
Follow the guide linked below to add an eShop to your Website Builder.
Fantastic...Thank you for your feedback =)
Sorry... Please submit a support ticket or try another search.