A:Answer You can get a good idea of what it will cover, here: https://www.bestbuy.com/site/geek-squad-protection/tv-home-theater-protection-plans/pcmcat280100050012.c?id=pcmcat280100050012.
It will include coverage for things like dust, heat, and humidity, failure of internal components, pixels (more than 3 throughout the screen minimum), and screen burn-in. It will not cover damage or failure due to accidental handling or "acts of God" such as cracked screens, fire, direct lighting strikes, and floods.
Geek Squad protection does not include mounting services, but those are available for an additional charge. The performance of the TV shouldn't be impacted by having it mounted vs. putting it on a stand.