Hi @Wildobagins,
Not sure if you managed to get the below to work. I have a workaround to trigger Google actions from Tapo events (where the device is not fully integrated) which may assist. It requires an additional tapo device and should work.
To make your scenario work do the following:
First of all you need to purchase a P100 plug which will only be used for this automation (i.e sound a notification on google speakers when doorbell is pressed). Plug it in a place which is out of the way and can't be removed or turned on/off. It will be used as a bridge between Tapo and Google for the automation.
When the Doorbell is pressed then use Tapo automation to also turn the P100 plug on/off. Use the "Turn On/Off" action to toggle the status.
Then use Google automation (as it works well with P100's) to generate a notification to your google speakers whenever the P100 is turned on or off.
Unfortunately you need to purchase an additional P100 to act as the bridge but this solution should work well.
Hope this makes sense and let me know if you need any assistance with the above.