ESPN+ is not a channel, but a streaming app (just like YouTube TV or Netflix).That means you can watch ESPN+ on your TV, but it does not get a channel as ESPN and ESPN2 does.
Cable television subscriptions from providers like Uverse, Verizon, FiOS, SuddenLink, Cox, Optimum, Xfinity, Dish Network, Comcast and Spectrum have complete TV channel lineups.
To get live ESPN, ESPN2 or ESPNNews channels, you would need a subscription from providers like these.
A subscription with ESPN+ will not grant you access to live games or events being broadcasted on your cable TV.
That said, to access ESPN+, you would need to download the app on any of the supported streaming players, including web browsers, mobile devices and smart TVs. You will also need to have access to the internet.