The Bible teaches us that God created the heaven, the earth, the sea, and everything in them in six days - and then rested on the seventh. This occurred a little over 6000 years ago. I believe this, because God's written word is my ultimate authority.
Science is a process... an investigation and collection of raw data. Science doesn't actually "say" anything - as the common idiom "science says" indicates. Science is only the collection of the data itself. Then flawed human beings interpret that data in many different ways. Those interpretations are not science itself, but conclusions based on the data which was collected via the scientific process. Those conclusions come complete with personal biases, and much conjecture and speculation.
Scientism is a blind belief in those INTERPRETATIONS/CONCLUSIONS.
For example, we know through science that there are lights in the sky that appear to move over the earth in repeated patterns. It is not science itself, but the interpretations/conclusions/speculations of flawed men which tell us that those lights are giant fireballs in a vast vacuum, that they are moving away from us, and that this movement means that they were at one time all squished together into a hot, dense ball of energy. And Scientism is the faith-based belief IN those interpretations.
So the cult of Scientism (not science itself) claims that our world began as an explosion/expansion of a singularity about 14 billion years ago. The Bible teaches that our world began as a six day creative action taken by God... about 6000 years ago.
Which of those is the truth?