American Islam is a term that describes the practice of Islam in the United States. Just like how people do things differently in different countries, Muslims in America might do things a little differently than Muslims in other parts of the world.
One way that American Islam might differ from other versions of Islam is in the way that Muslims in America might blend their religion with their American identity. This means that they might participate in American customs, like celebrating the Fourth of July or Thanksgiving, while still following their Islamic beliefs.
Another way that American Islam might be different is in the language that Muslims in America might use to talk about their religion. They might use words that are more common in American culture, like "mosque" instead of "masjid" or "prayer" instead of "salah."
Overall, American Islam is just one of many different types of Islam practiced around the world. It's not necessarily better or worse than any other form of Islam, it's just unique to the American Muslim community.