You cannot watch Discovery on Spectrum cable. Discovery Plus is a separate streaming service that requires a separate subscription. However, you can access Discovery Plus on various devices like smartphones, tablets, desktop browsers, Android TV, Apple TV, Fire TV, Amazon Fire Smart TVs, Samsung Smart TVs, Roku, and Comcast Xfinity. To watch current seasons and live content, you will need a cable, satellite, or live TV streaming subscription. Please note that Discovery Plus does not offer live content.