Ctrl+S is your friend! If the file is unmodified, it does not do anything.
The following macro could be attached to a keyboard shortcut.
Code:
Sub SavedDocumentQuery()
' Charles Kenyon 2023-Nov-24
' https://www.msofficeforums.com/word/51694-how-check-if-document-unsaved.html
' Is this document saved?
MsgBox "This document is saved: " & ActiveDocument.Saved, vbInformation, "Is this document saved? True if it is."
End Sub
Instructions for Installing Macros from Forums or Websites by Graham Mayor, MVP
Assigning Keyboard Shortcuts in Microsoft Word 2007-2021 (365)
You could get a lot fancier.
The presence of this in Office 2021 indicates that feedback from others was listened to.
See also: Automatically backup Word documents by Graham Mayor, MVP