A family of Microsoft word processing software products for creating web, email, and print documents.
What version of Word are you using? Is it the desktop application or Word Online in a browser?
In what way is word count not working? Do you not see it at all, or is it appearing but giving an incorrect count?
The following is specifically for desktop Word:
If the word count doesn't appear in the status bar at the bottom of the Word window, it may have been turned off. Right-click a blank area of the status bar, and make sure there's a check mark next to "Word Count" in the menu: