Yes, there are tools that let you view your FPS during gameplay.
Hey, I’m not very familiar with software =)
Fraps
You can also save it using this tool.
Fraps.
Fraps and NVIDIA's ShadowPlay have it
There’s nothing else for free.
Based on your profile picture, you have an NVIDIA GPU, and GeForce Experience Shadowplay is also compatible with it.
Frappe est gratuit
Fraps is available for free, and you also have MSI Afterburner.
EVGA accuracy