@Bhargav Pasarla - Thanks for reaching out to us. If the Download option is disabled, it's possible that you don't have the necessary permissions to download the test. Make sure that you have the appropriate permission to download the test. If you're still unable to download the test, you can try exporting the test to a storage account or to an event hub.
Specifically, you need to have the Export permission for the Application Insights resource that the test is associated with. If you don't have the Export permission, you can ask your Azure administrator to grant you the necessary permissions. They can do this by assigning you the Application Insights Component Contributor role or by creating a custom role that includes the Export permission. Hope this helps. and please feel free to reach out if you have any further questions.
If the above response was helpful, please feel free to "Accept as Answer" and click "Yes" so it can be beneficial to the community.