Hey @edmundsecho 

Databricks Account Id: 

All the databricks workspaces will be linked to an Account and the account_id is the unique identifier for the Account.

Read more about Databricks Account here: https://docs.databricks.com/en/administration-guide/account-settings/index.html#manage-your-databric...

User name:

This doc will help you understand this better: https://docs.databricks.com/en/administration-guide/users-groups/users.html