Go to Manage Your Store (Dashboard) > Marketing > Store Credit.
The Store Credit Manager will list all the available store credits.
Please check Store Credit Name and Status to see the expired or used note.
The Filter at the Store Credit Manager will allow you to locate your store credit in the system. You can filter by the combination of Customer ID, Store Credit Name, Order ID, Dates and Status.
Report
Go to Manage Your Store (Dashboard > Marketing > Store Credit
From Store Credit Manager, click on EXPORT TO CSV FILE.