WinSCP GUI can generate a script template for you.
https://winscp.net/eng/docs/ui_generateurl#script
Though it won't generate a code for "passphrase". For that you need to add -passphrase which to generated open command.
https://winscp.net/eng/docs/scriptcommand_open#passphrase

I have using winscp and with several onfiguration through UI and there all worked. I like to automate some of them.

I used 1) private key 2) username/password in the UI (all worked)
I tied using script/command line but it seems that some option to pass both private key and passphares. Also since UI has successful configurations, is they any way to extracy the UI working configuration and transfer to scropt or command?
Thanks

George