More people in america drink budweiser than any other beer. clearly, then, if you drink beer, you should drink bud. the fallacy here, if any, is called

I believe the answer is: The Appeal to the People or Argumentum ad Populum

The Appeal to the People or Argumentum ad Populum refers to the fallacy that created when we believe we should do a certain thing because most people are doing that thing.

This type of fallacy often caused by peer pressure that indirectly forced us to conform into a certain behaviour to fit in.