Hi @Sundar , welcome to Microsoft Q&A forum.
Please ensure that latest Az PowerShell versions are installed on Microsoft/Self-hosted agent on DevOps pipeline and try running once.
If you still see the same issue that means as per the error message, this API '2020-02-02-preview' is not supported in the mentioned region. We would not be able to import through the PowerShell commands and will need to import the bacpac in other supported region.
Please let us know if this helps or we can discuss further.
If answer helps, please mark it 'Accept Answer'