How to get access to other's script var with increment?

Hi, i'm trying to make ui to my game so I created UI class for handling it, and wanted to get 'points'(which is incremented each tap) var to properly show point in ui, but when i created instance of plyaer class with point var, and used 'magic' to show points with ui, it's still shows 0 as value, i used Debug.Log to check this, and it's still 0, but when i'm making this ui's stuff it player class(so just copy-paste ui's code to player class) it works properly. What may be wrong?