Is it bad to delete verified mobile phone number in Facebook account?

I have 1 new Facebook account with 1 verified e-mail address and 1 verified mobile phone number.

Is it bad to delete verified mobile phone number?

I don’t think it’s a bad idea, but I am not sure why you need to delete the phone number from the account.

I don’t think that move should cause any significant problems to your account’s trust score.

They may ask you for the phone number again in the future if you delete it. If you do not want it to be seen by others, you have an option to keep the number visible to yourself only if you are concerned privacy-wise.