You have to write a script for that.
For an example, see:
https://winscp.net/eng/docs/script_upload_multiple_servers
If you want to run the script from GUI, you can hook it in as a custom command:
https://winscp.net/eng/docs/custom_command

Is it possible to transfer 1 file to multiple FTP servers? I have no idea how to script here so if that is needed I need help scripting it and how to even use the script.

Example:
I have 1 file, and I want to put it into 50 FTP servers, how do I just click a button and it transfer that 1 file into all the FTP servers in a certain directory, like <FTP>\Test Folder\.