If you have registered to the Windows Insider Programme then you will have the access to mirror your Android smartphone to your PC. This can be done via the Your Phone app. In order to use this feature, your PC should have Bluetooth 4.0 which supports Low Energy.
As for now, the screen mirroring feature is available to all Android smartphone which is running on Android 7.0 or newer. The beta testing is only allowed on Samsung Galaxy S8, S8+, S9, S9+. If you have any of these range of devices then you can register for the Windows Insider Programme to use this feature.