I can't help you in detail with this because only you can get into Podcasts Connect to see your stats. However, to quote Apple's Help page:
'Podcast Analytics begins gathering data as soon as users play content in Podcasts app or iTunes, and displays the data when more than five unique devices play the content. Apple only displays data from users who agreed to
share their diagnostics and usage information with providers'
and
'Podcast Analytics begins gathering data as soon as users play content in
the Podcasts app (iOS 11 or later), in iTunes 12.7 or later (macOS and
Windows), or on HomePod.'
https://help.apple.com/itc/podcastsanalytics/#/itc623752a8d
https://help.apple.com/itc/podcastsanalytics/#/itc1723472cb
So it's possible that in the less than 2 days since you posted, less than 5 people who are using the specified version, and have given permission, have played your episode. Other than that I'm afraid I have no way of diagnosing the problem. Give it a few days: if you still don't get any stats you could try asking Support. Go to https://itunespartner.apple.com/en/podcasts/overview and click the 'Contact Us' link at the bottom of the page.