I replace the light bulb but it does not work although the dryer works fine. Is there a special bulb?

With the power unplugged, check the tab inside the bulb socket to be sure its not burned or damaged, also,, at times a new bulb is no good, If you have a multimeter,, put the selector to continuity ,, and place the black lead to the bulb base, and the red lead to the center point at the bottom of the bulb, if you get no reading, the bulb is no good, ( if you don't have a meter, screw it into another lamp, as long as your sure the dryer light socket is a 120v not a 220 volt