I haven't found a way to import a bacpac file into Azure SQL Hyperscale and the tooling does not appear to support it.
I have tried all the normal tools(MGMT Studio/ SqlPackage) and the Azure Portal Import attempting to import a bacpac file into Azure SQL Hyperscale and none of them appear to support the 'Hyperscale' edition.
SqlPackage dumps out the error:
*** Argument 'Edition' has an invalid value: 'Hyperscale'.
The Azure Portal has Hyperscale option disabled and MGMT Studio does not list Hyperscale as an option.
I cannot find any documentation about this explicitly being unsupported for the 'Edition' of the DB. Matter of fact this link: https://docs.microsoft.com/en-us/azure/sql-database/sql-database-service-tier-hyperscale-faq specifically states that "You can use all existing migration technologies to migrate to Hyperscale, including BACPAC, transactional replication, logical data loading".
How can you get an existing database into the Hyperscale environment? Seems like the end around option may be to import into a different one and try to switch it to Hyperscale.