Okay kiddo, so a television pilot is like a first try or a test episode for a new TV show. It's like when you practice writing your name before you write it neatly on your notebook.
The pilot is made to try to convince TV networks to pick up the show and make more episodes. So, it's really important that it's good and interesting.
Sometimes, pilots are never seen by anyone because the TV network decides not to make any more episodes based on the first one. This can be really sad for the actors and the people who worked on the pilot.
But, when the TV network likes the pilot, they give the green light to make more episodes, and that's when the real fun begins! The actors and crew get to work on more episodes and hopefully people will tune in to watch and enjoy the show.
So, a TV pilot is kind of like a dress rehearsal, it's a way to try to impress adults in charge so they'll let you keep doing what you love.