I made a burner account to be able to login into certain sites that requires fb login. After 2 months without a phone number they disabled it, and since my email was also a burner they removed it. I had then to create an actual email account, and give them my phone number (I don't have a burner number) to be able to activate the account again. Besides my phone number, nothing else is real in there, even my profile image is from one of those "this person does not exist" sites.
Your phone number is probably already verified by being caught in their net from your friends and relatives. I assume it'd be a different situation with a burner number.