If you request all your Flickr data through your account settings, please keep in mind your downloaded photos will only contain the EXIF data that existed when they were uploaded to the Flickr account.
Any information added to the photos after they were uploaded, such as a Title, Description, or Tags, will be in a separate JSON file.
To view this information on your computer, try opening this file on Notepad or a similar word processing application.
For more information check out out the following article: Understand Flickr EXIF data