Karlie here from the Shopify Support Team! Can you tell me more about what you're looking for? How do you want the credit system to work? What are you looking to achieve?
Happy to look into this for you!
*Karlie* | Social Care @ Shopify - Was my reply helpful? Click Like to let me know! - Was your question answered? Mark it as an Accepted Solution - To learn more visit the Shopify Help Center or the Shopify Blog