Kali Linux 2020.1 Root Password Setup.

Beginning with Kali 2020.1, the superuser account no longer exists, and the default user is now a standard, non-privileged user. If you would like to use root instead of the none superuser account on Kali Linux, here are the commands&instructions:

Issue command ?sudo su?

<Enter the password for kali user account>

Issue command ?passwd root?

<Enter the new password and retype that password again>

Now, your root password changed, try to re log-in or you can just switch the user and log in as root.

Let me know if this helped you.