RESOLUTION command might include monitor scaling info

C:\>resolution
  \\.\DISPLAY1, Intel(R) UHD Graphics 630
     Monitor:            Generic PnP Monitor
     Refresh rate:       60 Hz
     Color depth:        32
     Screen resolution:  1920 × 1080
     Desktop region:     (-1920, 358), (-1, 1437)
     Scaling:            125%  (120 DPI)

* \\.\DISPLAY2, Intel(R) UHD Graphics 630
     Monitor:            Generic PnP Monitor
     Refresh rate:       59 Hz
     Color depth:        32
     Screen resolution:  3440 × 1440
     Desktop...