When the bitcoin fork occurs in couple weeks will I get both chains, forks, of bitcoin in my wallet?
No and no. You will only have Bitcoin in your current wallet. You will need to install a S2X compatible wallet, and either transfer your wallet there or import private keys to be able to use the S2X altcoin. However, due to lack of replay protection, I highly advise against trying to spend S2X coins as someone who isn't extremely tech savy. Otherwise, you're likely going to lose money.