There are a few different views.
1. Young Earth creationists believe the universe was created in 6 days 6000 years ago.
2. Old earth creationists believe that the universe is billions of years old and that genesis was not meant to be taken literally.
Maybe the 6 days were not days but periods of time that could be millions of years.
They usually reject evolution though.
3. Theistic Evolutionists believe that the universe is billions of years old and evolution is true but God is directing the process of evolution.
4. Naturalistic evolutionists believe In the evolution the Big Bang and don’t believe there is need for a God.
I am a Deist but am undecided.