The search result for "20702" refers to , which was released in July 2019 . Download Links for YouTube for Android TV 2.07.02
(If you want, I can search APK archives for that exact build and report available filenames and release notes.) youtube for android tv 20702 download link
If you're unable to find the update on the Google Play Store, you can download the APK file for YouTube for Android TV 20702 from a trusted source, such as: The search result for "20702" refers to ,