Coupon is the encoded serial that allows getting the discount when customers apply it in the checkout process. You can come back the Create Coupon Codes in Magento 2 to learn how to create a specific coupon code in the easy way.
From Shopping Cart Price Rule settings, allow you to generate multiple coupons at the time, but you might be have some difficulties to manage them without any confusion. Therefore, I will support you do it effectively with Coupon Useage Report in this post.
Coupon Useage Report is the powerful tool to filter all coupon by time period, order status, and price rule. Depending on your choice, the corresponding coupons will be shown on the coupon report.
Report > Sales > Coupons.
Store Viewfor showing the coupon report.
Statisticslink to renew the data of the day.
Date Usedfrom the dropdown: Order Created and Order Updated while the Order Updated report is created in real-time, and does not ask for a refresh.
Periodfor the report: Day, Month, or Year.
Cart Price Ruleto
Show Reportwhen complete all and the report will appear the below.
Ref: Magento 2 User Guide
It comes to the end of tutorial: How to create coupons usage report in Magento 2.