If you used an email address then you must have had an account on an exchange that required an email address. However I am not sure if there were even exchanges in 2009. Bitcoin was incredibly new at that time and would have likely been worthless. If you had Bitcoin and there were an exchange to buy and sell Bitcoin at, then your Bitcoin would either be on that exchange or in a local wallet on your computer.
If your Bitcoin was on that exchange, you should try to figure out what exchange you had used. Unfortunately it is likely that if you did use an exchange that it has since ceased to exist, so even if you did figure out what exchange, you probably can't get your Bitcoin.
If your Bitcoin was on your computer, then you would have been using the satoshi client as that was the only wallet software at that time. This would have resulted in you having a file named wallet.dat that contains all of the information necessary for you to retrieve your Bitcoin. If you think you had withdrawn your Bitcoin from the exchange to a wallet software, then you should try to look for this file. If you do not have a wallet.dat file, then you have either lost it or your Bitcoin was never stored locally.
I think it is unlikely that you will be able to recover your Bitcoin. Whatever exchange you used is probably gone by now and it is likely that you no longer have or never had a wallet.dat file.