With Azure CLI, you can list the resources you have
az resource list
This command lists all resources in your Azure subscription.
If you prefer Azure PowerShell, use the command:
Get-AzResource
These commands will return a list of all subscription resources, not just services. However, because each resource is associated with a service (for example, a virtual machine is associated with Azure Compute, a database with Azure SQL Database, and so on), you can use this information to determine which services you are using.
Remember that the Azure CLI and Azure PowerShell commands will both return a list of resources based on the logged-in account. Check that you're logged in to the correct account.