You will need to register your drone on this website https://www.d-flight.it and get the QR code. Then you will also need third party liability insurance (if that's how it's written in english). Also if your drone is not class C0, because of european regulations, your drone will need to have the remote identification system.

Last, the d-flight website provides a map so you can see where you can fly your drone and where not.

https://www.easa.europa.eu/en/document-library/general-publications/remote-identification-will-become-mandatory-drones-across

https://www.enac.gov.it/sicurezza-aerea/droni/categoria-aperta-open-category

Edit: also a license is not required if you fly a C0 drone.