AFAIK, you can use power bi report server paginated report on power bi service side, it requires Pro license and premium workspace(premium license). Please take a look at following links to know more about these operations:
After these steps, you can use power bi mobile app connect to your power bi service account to view these paginated reports. In addition, you can also connect to power bi report server to view its contents on power bi mobile app side.
If you mean embed power bi contents to a customized mobile app, it should similar to common power bi embed operations. (embed power bi pagination reports)
But as I mentioned above in the question, I'm using Power BI Report Server which come along with SQL Server 2019 enterprise license and What I'm asking here is the ability to Embed into our own development Mobile App, not Power BI mobile app.
Please help to let me know whether we are able to Embed Power BI Report from Power BI Report Server into our Own Mobile App, not Power BI Mobile app
For any report within Power BI Report Server, you can embed within an iFrame by adding the querystring parameter ?rs:Embed=true to the URL. This technique works with Power BI reports as well as other report types.
In addition, your requirement should more relate to PBRS usage and development. You can also post this to Report Server subforum to get further support: