Importing Windows namespace troubleshoot

Hi there, I’m new to unity3d and I am making a demo for my game and wish to use the Windows.UI.Input.Inking namespace included in the Universal Windows Platform SDK but hasn’t gotten anywhere after a long period of Googling. So I hope someone can shed some light on this problem of mine.

Start with the basics?
https://docs.unity3d.com/Manual/windowsstore-gettingstarted.html

Thank for your reply, I realize I might be a bit vague with my question so I posted another one here if you still wish to help me:
https://forum.unity.com/threads/using-uwp-libraries-in-unity.587626/