Hello akshaypatil9494,
Thanks for the update and I completely understand.
At the moment, manual copy-paste is the only available method to capture App Audience access because Power BI does not expose this metadata through any REST API, Admin API, or activity logs.Your workaround is a valid approach for a one-time snapshot, and many customers use the same method until Microsoft provides an official way to access App Audience information.
We recommend sharing this requirement on the Ideas site so the product team can prioritize it. Features with more community votes are more likely to be considered for future updates:
https://ideas.fabric.microsoft.com