Yes, as long as the monitor is VESA compliant and fits the weight limit of the arm or wall monitor mount in question, there is no reason why you cannot mount a curved screen. Curvature is not that extreme in most cases.
That being said, there may be slight differences in the monitor’s ability to maneuver fully because of its shape or it may actually squeeze better into certain positions. All you need to look for is the weight limit and size of your monitor, just as you would with a flat one.
If in doubt, check with the manufacturers or retailers of both products who should easily be reachable online.