Segwit2X (B2X) coin is supported by bitcoin_fork_claimer, so following one of our three guides catering to your skill level, situation and goal applies:

There likely exist several other methods, however, they are riskier we cannot recommend you take risks with your private keys without understanding the specifics of your situation. This includes exposing your keys to the official wallets released by the project which are almost certainly not up to the standards of quality of the best in the Bitcoin (BTC) ecosystem and the other best-of-breed security-focused software.