@Ayoubah-ehLike most users like myself, still haven't received the prompt for cross progression.
It's usually taking more time than usual for the accounts to merge. But eventually you will receive the notification for cross progression when it comes to you.
Other than that, we don't have an exact time lapse as to when it will arrive for most players.
Just make sure that both of your platforms accounts are under the same EA Account for cross progression to work. If you would like more information on this matter, you can check this quick guide thread:
https://answers.ea.com/t5/General-Discussion/A-Quick-Guide-to-Apex-Legends-Cross-Progression/m-p/13148659#M242801