Bash and Chmod Command Fix

Please I Need Your Help , Any Time I Use the Bash or Chmod Commands It Gives Me an Error , Am Using Kali Linux 2020.1b , How Can I Fix This . Also my Kali Linux 2020.1b does not has beef installed in it and have tried installing but the bash and chmod command isn't working and when I use 'apt install' it still gives me the same error . Will really appreciate if you can help me on how to fix all this thing .