Hi Maqsadjon Saidov,
Windows 10 IoT Enterprise LTSC is a slimmed down version of Windows 10 made for IOT devices running on devices or appliances typically running applications not requiring any end-user or gaming experiences, it does not have the store by design.
You should however be able to add media player running this command in an elevated PowerShell Window:
Enable-WindowsOptionalFeature -FeatureName "WindowsMediaPlayer" -All -Online
(For gaming, Windows 10/11 Home is generally the better choice due to its regular updates, compatibility with the latest games, and gaming-specific features - Windows 10/11 Enterprise LTSC is more suited for environments where stability and long-term support are prioritized over the latest features)
Hope this helps,