There may be different reasons behind the appearance of white dots on the iPad screen, such as dead pixels, screen damage, or a software glitch. First, you should check whether the problem is hardware or software. Restart the iPad or update the software — if the dots are a temporary glitch, they will disappear. If the dots keep appearing in the same place, they are probably dead pixels, and in this case, it's best to visit Apple Support or a service centre. One step is gently cleaning the screen with a cleaning cloth — sometimes dirt or smudges also appear as white dots.