I currently have my btc in a core wallet and had them their before the fork. Which wallet would I used to import my key for BTG so I can retrieve them.
You need to download their core wallet, that comes with a full download of the BTC blockchain and 150GB of wasted space and time. Then you need to import your private key into the BTG wallet. Move your BTC to another address/key to secure them before you do that.
Once you have your BTG, it took me a total of almost 2 days, good luck with finding an exchange where you could sell them. So for only HiBTC seems to accept deposits.