TLAW_TACO Your Apex progress and data is stored on your EA Account.
With that being said, are you signing into the correct EA Account?
Furthermore, if you are on a platform account, (such as Xbox, Steam, Switch, and/or PlayStation), are those platform account(s) still linked to your EA Account?, (as unlinking platform accounts can cause a loss of some, (or all), of your Apex progress and data).
Lastly, what exactly did you mean by "your account was closed"?
If by "closed" you meant it was "deleted", you can recover your EA Account by resetting your EA Account's password.