Hello Omar,

At this time, Word does not have APA 7th. This has been requested for years but does not seem to be a high priority for the designers.
See APA 7th edition (Word).
It is possible to download and add it from another user.

This is a user-to-user support forum. -- You can give feedback TO MICROSOFT designers and decision makers on Microsoft Word or other Microsoft Products using their feedback mechanisms, (not here). (This is a link to directions.)