open winscp from command line and change title window?

how can i change the title window that it will show my text
and not for example : root@10.10.1.111?

Not directly.

Though you can create a stored site with any name you want and open that from the script (open sitename). The name of the opened site shows as window title.

See
https://winscp.net/eng/docs/session_configuration
https://winscp.net/eng/docs/scriptcommand_open

+1 on being able to set the title from the command line directly.

It's actually possible already:
https://winscp.net/tracker/1373
https://winscp.net/eng/docs/commandline#session