: Press Windows Key + G and pin the "Performance" widget.
If you do not receive your code, check your spam folder or contact FPS Monitor Support to have it sent manually. : fps monitor activation code
If you do not wish to use a paid activation code, many free alternatives provide similar overlays: Xbox Game Bar : Built into Windows (Win + G). Steam Overlay : Enable via Settings > In-Game > In-game FPS counter MSI Afterburner : Press Windows Key + G and pin the "Performance" widget