To do in Word for the Mac. Ctrl+Shift+P

Otherwise, I assume you have function keys.

Type the word "page" without the quotation marks.
Select that.
Press Cmd+F9 and then F9.

https://support.office.com/en-us/art...k_workfields16


Either of these inserts a page field at the insertion point. That will reflect the "formatted" page number.