Checkout REST API's for reporting exposed for SnapCenter. In the demo you will see how you can build customize SnapCenter backup report using any reporting tool like in this demo Power BI is used.
https://www.youtube.com/watch?v=NOqO_3r_-vw&list=PLdXI3bZJEw7nofM6lN44eOe4aOSoryckg&index=1