Where do I find my account ID for Vrbo API? I cannot find it listed anywhere in my owner rez profile.
It's under Settings > API Integrations > select the Vrbo entry. If you don't already have your Vrbo API configured in there, you aren't ready to do the connection yet.
https://www.ownerreservations.com/support/articles/channel-management-api-integrations-vrbo-setup-connecting