Hi Tariq! The best bet would be to a) join ASCAP or BMI and also hook up with a Publishing Company and an entertainment attorney. This is the best way to protect yourself and to have options for opportunities.

Another route AFTER you have an attorney is to have a lawyer or manager contact music supervisors for TV shows (you can find this information online or your lawyer would most likely have access to this info.) For movies, that's tougher... where are you located? I may have some resources for you as a starting point...