WinSCP

1. On a Windows machine, WinSCP (https://winscp.net/eng/index.php) could be used for files transfers in both directions. Download the software and install it on your laptop.
2. Launch WinSCP and enter the IP address, username, and password of the Raspberry Pi Zero in the window. Under the File protocol: drop-down menu, choose SFTP or SCP.

Enter the IP address, username, and password

3. Click on Yes when the software prompts whether it is a trusted host:

Click on Yes on this warning

4. If the credentials are correct, the software should provide the remote access of the Raspberry Pi Zero's filesystem. In order to download files or upload files, just right-click and choose the upload/download option (shown in the following screenshot):

Upload/download files with a right-click