According to the Bible, the creation week lasted seven literal days and occurred a few thousand years ago.
However, many Christians today accept the teaching of science that life has existed on earth for millions, even billions, of years.
However, these dating methods have significant problems that can lead to serious errors of interpretation.
It's also not a problem that geologists say that the sedimentary layers of rock took millions of years to form, since there are many evidences that the great geological formations on earth were formed rapidly and catastropically, as in the Biblical flood or subsequent catastrophic events.
For example, there is too little erosion between the geological layers for them to have taken millions of years to form.
You see, the theory of evolution has so many problems that most people find evolution hard to accept, and I don't think many people are led to question their faith because of it.
It just doesn't seem reasonable that life could develop on its own by chance, and the evidence that this actually happened is missing.