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.
Based on what I read once you have a bitcoin you will get the same amount of coin from the fork. Since you need to install a S2X compatible wallet do you need to transfer your bitcoin from your original wallet or will it just be the new coin? If transferring of bitcoin is needed to get the new coin once you got it can you you transfer your bitcoin back to your original wallet or both coins should stay on the new wallet?