Hi @Guardiangel
Sharing your phone number in your bio is not necessarily a violation of the policies, as it’s not mentioned here View & edit your Google Maps profile - Android - Google Maps Help
It’s more a matter of privacy, that’s why Google Maps is informing us that “Your name, photo, and bio will always be found on your profile.”
So I wonder where this information is coming from, @ShifaAymal ?
However, what @Mehedi_LGC said is correct, because this person is inviting others to contact him for writing reviews, and this is prohibited.
You should report this person using the report function in Google Maps by following the steps explained here: You can now report entire profiles for abuse on Google Maps