I don't want to be mean, but you already asked a similar question about Reserved xyz... and there you got an answer => Azure Portal - Reservations.
If your Azure SQL is not listed there, it is deployed as a PAYG-services.
https://learn.microsoft.com/en-us/answers/questions/1115802/pay-as-you-go-vs-reserve-capacity.html
Whether it is for your SQL Server or just a database depends on the service and how you deployed your SQL...
If it is an Azure SQL database... it is just the database
If it is an Azure SQL Managed Instance... it is for the whole MI, including all databases
I hope my answer is helpful to you,
Your
Bjoern Peters
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