Just want to clarify, you are looking to export CommVault reports and then import into another platform/sharepoint for reporting purpose, correct?
At the moment I don't believe it will be simple task to injest specific columns/rows into a separate platform for reporting purpose.
However Commvault does have Analytics Support (https://documentation.commvault.com/commvault/v11/article?p=43740.htm)
Data Analytics allows you to view statistical information about unstructured data, such as files and emails, in your CommCell environment.
See if the above achieve your purpose.