Hello Sandhu179,
It sounds like you are unable to add your phone number to FaceTime and iMessage. We understand how important this is to you and we are here to help.
We won't be able to add it for you but we have a few articles that may help. Let's review all of the steps outlined here:
If you get an error when trying to activate iMessage or FaceTime
Add or remove your phone number in Messages or FaceTime
If it has been more then 24 hours and you are still unable to activate iMessage or FaceTime, please reach out to Apple Here: Get Support
Cheers!