You can configure the Magento 2 Store Credit Extension through the admin panel. The extension provides a user-friendly interface where you can set up rules for earning and using Store Credit, customize the display of Store Credit information, and manage other settings related to Store Credit functionality.

Read this How to Configure Store Credit Extension in Magento 2 Store to setup this extension.

Here are the few more resource to help you get most out of this Magento 2 Store Credit Extension.

• Maximizing revenue with Magento 2 Store Credit Extension
• Raise Loyalty & Returning Visitors with Magento 2 Store Credit Extension
• Store Credit in eCommerce: A Key to Customer Retention