It may take some time depending on the number of files you have and the total size. You can use the "Email me when done" option to get notified once the archival completes. You can then download the created archive locally. Make sure to download it to your Google Drive shared folder or copy it there after download so it gets synced and backed up in the cloud.
As one of the best YouTube video downloaders on the market, Jihosoft 4K Video Downloader supports downloading videos from almost all video streaming sites (such as YouTube, Facebook, Twitter, Instagram, Vimeo, Dailymotion, etc.). What sets it apart from online websites is that it allows you to download entire YouTube channels & playlists and save them in HD, 2K, or even 4K quality. In addition, it has a one-click download mode that can apply your settings or preferences to all downloads, which will greatly save your time and energy.