If you got a skills in writing script, then you are in with media. Find any company you want to work with and look out if they are looking for a scriptwriters. If they don't have, maybe if you have samples of script, you can leave it or sent at the company so they look at it along with your personal details, where to contact you and how. If they going to like your script and if you are lucky, maybe you will have a shot and get the job as scrip writer. If you don't get any response front he company, be diligent to come back anytime to show them you are really keen and you have the interest to do the job in their company. Might one day you will get the shot, who knows right? Sometimes, it take hard work to get the job we really wanted, in the end it worth it if you get it.