If your hosting plan is Premium Web or greater, you can access your hosting via SSH. The SSH access type is restricted to your home directory and below.
Enable SSH access
To establish an SSH connection, first, you will need to enable it by heading to Websites → Dashboard and searching for SSH Access on the sidebar:

On the SSH status, click on Enable:

That’s it! Now you will be able to connect to your account using SSH.
If you have a Single hosting plan and you definitely need SSH access, you can consider upgrading your hosting plan.
Additional resources about SSH