A:Answer Town,
Thank you for your question!
We cannot speak as to exact FPS, as this will depend on multiple factors, including other programs running at the same time, internet connection, specific settings, etc.
However, based on the information available at this time (06/27/2019), this configuration meets or exceeds both the minimum and recommended system requirements for Fortnite.
As such, we would expect it to perform exceedingly well, even on higher settings.
If you would like additional assistance in finding the best of our CLX SET offerings here at Best Buy, to meet your specific needs, please do not hesitate to contact our Friendly Customer Service Team at 855.490.2569 (a toll-free call). We're always happy to help!