Spin waves are coherent oscillations of magnetic moments in magnetic materials. They offer a promising alternative to charge currents to transmit and process information at the nanoscale. Using a time-periodic driving, we can perform Floquet engineering of spin waves, meaning that we can drive novel states which do not exist at equilibrium. It is thus possible with this approach to create spin wave frequency combs in magnetic discs hosting vortices. In this project, we propose to use scanning NV center microscopy to detect these Floquet modes in magnetic microdiscs. Scanning NV microscopy relies on the use of quantum sensor, the Nitrogen-Vacancy center in diamond to locally probe magnetic stray fields. Owing to the versatility of this quantum sensor, we are able to detect both the static magnetic field produced by the magnetic vortices and the microwave magnetic field generated by the spin wave modes. Since this sensor is integrated inside a scanning probe microscope, we also benefit from a nanoscale spatial resolution, which will allow us to map spatially the Floquet magnon modes with an unprecedented accuracy.