Hello Milano Cantante,
Since you still have the subscription, first check whether only the Word shortcut was deleted.
Open Start, search for Word, and try opening it from the search result. If Word opens normally, right-click its icon and select Pin to taskbar or Pin to Start to create easy access again.
If Word does not appear in the search at all, you can reinstall Microsoft 365 using the Microsoft account associated with your subscription. You should not need to purchase it again.