Frame rate question

I’m running a 3070ti and 24gig ddr4 with a decent size monitor. I am trying see how many fps the game is running at but I am unsure how to do it. How are people determining their FPS when running this game??

I’m running a 3070ti and 24gig ddr4 with a decent size monitor. I am trying see how many fps the game is running at but I am unsure how to do it. How are people determining their FPS when running this game??