This article will show you how to download a folder located in Google Drive to a computer running Windows or Mac OS X. The folder and all of its contents will be downloaded to your computer as an archive (ZIP file). To work with the folder on your computer, extract the zip file.
Steps

Step 1. Go to https://drive.google.com in your web browser
If you are already logged in, your Google Drive will open, and the screen will display all the files and folders that are in Drive.
If you're not already signed in to your Google account, click Go to Google Drive and enter your Gmail email address and password

Step 2. Right-click on the desired folder

Step 3. Select Download from the menu
Google will compress the contents of the folder into an archive (ZIP file); it will take some time. Then the download of the archive to your computer will start.

Step 4. Double click on the archive (zip file) to unzip it and extract the files
To do this, on most computers running Windows and Mac, you just need to double-click on the archive.