Here's what we can say:
* The "Tinker Bell" film series: This series consists of six direct-to-video movies, with a seventh one announced. Box office figures for these movies are not readily available, as they primarily went straight to DVD/Blu-ray.
* Other media: The franchise also includes television series, video games, merchandise, and more. Each of these has its own revenue streams.
To get a full picture of the franchise's overall earnings, you'd need to factor in all these elements, which isn't possible without access to internal Disney data.
However, we can say that the franchise is highly successful, with a huge following among children and adults. Its popularity translates to significant revenue through various forms of media.