To list all the COMMANDs you can use, open the console in-game and type in listCmds To list all the CVARs you can use, open the console in-game and type in listCvars After that, you can look up below what cheats there are & what their codes to enter are.
To activate all Wolfenstein II: The New Colossus Cheats, during gameplay you should press on the ~ tilde key (the key above TAB) to bring up the Command Console.