Do We Live On A Flat Earth

Do we live on a flat Earth? This is a question that is becoming more and more a discussion in our world. What does that mean if we're not actually flying through space 66,600 miles per hour. But we instead we are a stationary flat Earth, which is the center of for a lack of a better word the universe. Are there more universes
or realms with an ice wall surrounding it as well . HOW MANYS RELMS ARE THERE ?