Greetings Michael - FCR comes up often many places I go, and it's definition seems relative to the requestor or line of business (i.e. no one-size fits all.) The short answer is that metric isn't built-into Genesys Cloud, per se.
Although none provide a perfect solution (e.g. buy 3rd-party vs build, do you measure repeat calls within x timeframe, can it be captured within the CRM, wrap-up code, Agent/Supervisor Copilot insights, etc), here are a few threads worth reading. I've also been told Journey Management would be something to look into, but does come at a cost:
------------------------------
Brian T. Jones | Ascension | Senior Specialist - Technology
------------------------------