Yes, the Godox Lux Junior is fully compatible with the Fuji X100V. The flash can be mounted directly on the camera's hotshoe and works reliably with this camera model.

Note that because the Lux Junior does not communicate with the camera, you must first activate the flash function in the camera menu (in "M" mode) so that the hotshoe triggers when you press the shutter. After that, you can shoot normally with the flash.