Get-WindowsDeveloperLicense
Provides information about Developer Mode for the current computer.
PowerShell
Get-WindowsDeveloperLicense []
The Get-WindowsDeveloperLicense cmdlet provides information about whether you enabled Developer Mode for the current computer. You no longer need a developer license. Therefore, there is no longer an expiration date for a developer license. For more information, see Enable your device for development (https://msdn.microsoft.com/en-us/library/windows/apps/xaml/dn706236.aspx) in the Microsoft Developer Network library.
PowerShell
PS C:\> Get-WindowsDeveloperLicense
This command checks the status of Developer Mode for the current computer.