Now that you know it’s all about value. You need to do research to understand the type of BI projects that brings value to the sector you are working in.
A Manufacturing sector might be more interested in real-time tracking of facility management via a dashboard than a Power BI Dashboard for performance reporting.
So, do your findings, ask friends and colleagues in similar roles in other organizations a broad scope of the kind of projects they work on.
Check google for use cases in your industry.
If you take it from this angle, you are still pursuing business value and not just something vague.