So the ftp connection is only "password authentication", is that considered secured or the SSH is not running?
WinSCP understands only SSH. So if you connect with it you connect with SSH. However password authentication is less secure the PKI authentication.
I have no idea on the automated ftp process.
Scripting/automation will be included in the next major release.
Is there anyone know the related link to explain more for winscp on the scripts?
There are no scripts, see above.
Is winscp can connect to the SSL FTP server with automated support(script)?
WinSCP does not support SSL. If you mean SSH, see above :-)