How do I light my pilot light on my gas heat at my home?

You don't do it yourself for several combustible reasons. You have a professional come in and do it for you.

What kind of gas heater is it

Turn your gas valve knob to pilot push down and hold while lighting the pilot with a match keep holding down on the valve knob for about a minute after the pilot is lit. after that let off the knob and turn gas valve to on position.