FWIW, you can use <W@$SH_SHEET_SCALE_NUMERATOR> and <W@$SH_SHEET_SCALE_DENOMINATOR> to report the sheet scale; but the views on the sheet will not necessarily correspond to the sheet scale...
In the NX help file, if you navigate to: CAD -> Drafting -> Drafting user interface and preferences -> Fonts and control characters, it will list the available sheet attributes that you can use in your notations.
thank You for the response !
This is what I wanted to know
Sure, all view have their own settable scale, but for the my case ("Main" Sheet scale - title block) is it fine.