If you don’t have WinSCP installed you can download it from https://winscp.net/eng/download.php

 Provide hostname and Username. Click Adcanced-> Advanced…

Provide the .ppk authentication key in Advanced Site Settings -> Authentication and click OK.

Now click Login

Click yes. 

Now you are connected.

Now I am transferring test.txt from my local drive to /tmp directory in the AWS Instance