I'm assuming you want .bacpac file of a Azure SQL DB. Follow below steps.
- If you have SSMS installed in your machine, connect to database using ssms, use the server credentials or get access to take backup.
- Go to database, right click -> Task ->Export Data tier application
- Select storage account, container and file name, or you can export to your local and click next and then Export.
Once the file exported, you can import the same to another server
Hope this help!
Thank You!