Currently, Essentials can deploy Einstein Bot metadata - it will deploy all the versions of a Bot to the target Org.

The BotVersion metadata is used to deploy 1 specific version of a Bot. It is working, but we have an issue listing them in the "Add Components" tab. We will fix this and deploy to production mid this week.

For now - the workaround is to click on More > Import Component Selections an manually enter the Bot version. For example, I just want to deploy v2 of a Bot named "CD_Bot", then below is what I entered in the import selections