Under “Profile & Parental Controls,” click on “Viewing activity.” This is where you can remove a show or series that was watched in the past and delete it from your history completely. Underneath the “Profile & Parental Controls” section, click on “Viewing activity”. Here you can remove any show that you’ve ever watched and, if desired, delete an entire series from your history at once.
To remove items on My List, select the movie or show from the MyList screen and choose Remove.
In the dropdown menu, choose Account. Go to My Profile > Viewing Activity. Click on Delete next to the show or movie you wish to delete from the list.
To enable playback history on your iOS or iPadOS device, go to Settings > TV > Use Play History. To enable playback history on your tvOS device, go to Settings > Apps>TV>Use Play History.