There are several ways to obtain root user rights:

1. **Use "sudo" before the command** you want to apply.

2. **Switch to the root shell** so that all commands are executed as the root user. There are several commands for this, such as `sudo -s`, `su -`, or `sudo su`.

3. There is also a way to connect to the server as the root user directly. It's described separately below:

1. **Edit the SSH configuration file** with superuser rights (`sudo` can be used to obtain superuser rights) `/etc/ssh/sshd_config`. Remove the `#` to uncomment the line "PermitRootLogin" and set the value to "yes," then save the changes.

2. **Create a password for the root user** using the command `sudo passwd root`.

3. **Enter the password twice:** After typing "root," enter the new password twice, and then restart the SSH server using `sudo systemctl restart sshd.service` or `sudo service sshd restart`.

4. After that, you can connect to your server via SSH with the ROOT account using the password you provided:
   ```bash
   ssh root@0.0.0.0
   ```
   Replace `0.0.0.0` with the actual IP address of your server.