Solus does not come with the OpenSSH Server (sshd) installed or enabled for use. This is a very good thing, because it makes the system that much more secure. However, if you do need/want to remotely access your system via SSH (e.g., you run a homelab), then you'll need to install, enable, and start the service using these three (3) simple commands:
sudo eopkg install openssh-server
sudo systemctl enable sshd
sudo systemctl start sshd
<Post Note> I didn't find this information using the forum search or in the help center, so I thought I'd add them in here (once I figured them out myself) to help anyone else who might be searching for them.