Google translates:
a guest that was supposed to arrive now, he told me now that he lost his flight,
will I receive the same amount of my fee as it has blocked my booking?
Your question is confusing me. If the reservation is cancelled, you will receive what is dictated by the cancellation policy attached. If the reservation is not (and will not be) cancelled, you will receive full amount (same if guest showed up).
Please note there is also a community for Italian language:
https://community.withairbnb.com/t5/Community-Center-IT/ct-p/community-center-it
Best regards,
Emiel