I are 6 feet tall and am a 12 year old girl is that bad?

There is nothing wrong with being 6 feet tall as a 12-year-old girl. Many girls experience a growth spurt during puberty, and it is not uncommon for girls your age to be quite tall. In fact, the average height for a 12-year-old girl is 5 feet 1 inch, so you are actually slightly above average.