Hi @Nanjundan,
No, I don't think currenty this is achieveable.
Under Microsoft Flow, there is no dynamic content available to get the file download link from OneDrive-> Create File action, further, there is also no proper action available under Microsoft Flow to send information back to the Browser (or to the PowerApps client) from Microsoft Flow.
Besides, within PowerApps, currently it is only available to connect to Excel Table for the OneDrive for Business connection, and there is no fucntion provided for this connection.
The only possible way that I could share is through custom API, for OneDrive for Business, it should be Microsoft Graph, check the DriveItem resource for more information:
DriveItem resource
There is download item contents Task available.
In addition, you may also submit this as an idea, to enable the OneDrive "Download" function directly within PowerApps.
https://powerusers.microsoft.com/t5/PowerApps-Ideas/idb-p/PowerAppsIdeas
Regards,
Michael