How do i de register my number if i no longer have access to the number

Hello Torijessica,

Thanks for that info and for choosing the Apple Support Communities. If we understand correctly, you are unable to deregister your phone number for FaceTime and iMessages. To help with this, please follow the steps in the section titled "Deregister iMessage online" in this Apple resource and then contact Apple directly if you need any further assistance.

Deregister iMessage on your iPhone or online

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Cheers!

If you no longer have the number there is no need to deregister it. Texts sent to it will fail.