1. To transfer data/files from one Google Drive to another, the data/files need to be downloaded from the first Google Drive:
2. Right click on the newly downloaded Zip file and select "Extract all..."
3. Logout of the original Google Account.
4. Go to https://drive.google.com/ and login for the other Google Account.
5. Open or create a folder.
6. Drag the files into the Google Drive folder to upload them.