The VIP membership is a monthly subscription that you can get in the game's shop or in the Trivia Pass.
It allows you to play ad-free, grants you infinite lives, and gives you the possibility to get special combos and discounts.
The subscription is managed, depending on your device, from the Apple App Store or Google Play Store.
In case you want to cancel it, we invite you to visit the following articles: How do I cancel my VIP membership if I use Android?, or How do I cancel my VIP membership if I use iOS?