I am getting messages from apple and I want to know if they are real

Good Morning

My mother's iPhone was stolen last month and I blocked it and put my phone number in case they found it. And this week I am receiving messages saying that the phone has been found to put my apple id to know where it is.

but I have not put it because I enter the icoud account and it does not put anything.

and today I received another saying to put my address that they are going to send it to me.

Can you tell me if this messages are real .

Thank you .