If your doorbell is the Google Nest Hello Doorbell (now renamed Google Nest Doorbell [wired]), you can go to the home.nest.com website on your PC and login with your Google Nest credentials to view video history. If you have the new Google Nest Doorbell (Battery) you can only see doorbell footage in the Google Home app.
Google Nest's Sept. 29 explanation for this approach is posted here:
Thank you for your feedback on this issue, I fully understand the frustrations of not having your new Nest Cams in the Nest App or available on https://bit.ly/3HtBgJC web app. I can imagine having to use two different apps at the moment is quite daunting, and could lead to frustration.
However, the new Nest cameras and doorbell are exclusive to the Home app because we wanted to create an integrated experience with your speakers and displays. A Nest Aware subscription applies to all of your cameras, speakers, and displays in the same home structure. Thank you for your continued patience, and support. I am more than happy to assist you further with this inquiry if you wish. Please let me know.
Just checking in to see if you still need assistance with this issue. We'll leave this topic open for another 24 hrs in case there are any follow up questions or comments. Please let me know if you need further assistance.