AppleCare+ is Apple's brand name for extended warranty and technical support plans for their devices. AppleCare+ extends the devices' one-year limited warranty and the ninety days of technical support (which is known as basic AppleCare). It allows the customer unlimited incidents of accidental damage with a deductible (which, like the price of the plan, varies by device). AppleCare+ is available for many Apple products, including Mac computers and displays, Beats headphones, HomePods, iPhones and iPads, Apple Watches, and Apple TVs.
https://en.wikipedia.org/wiki/AppleCare%2B