There are Christian denominations that claim no contradiction to science or the scientific method. This begs the question, is scientific evidence allowed when answering a question? Or should it be excluded?
Scientific evidence is of course allowed where it is appropriate. For example, it's reasonable in answer to a question about wine in the Bible to point out that wine is preserved better than grape juice.
However it's worth restating that the site is about Christianity. It assumes a Christian viewpoint. If you start answering questions with 'science says Christianity is untrue' then your answers are going to be unwanted. The same would be true if you said the same about history, philosophy or sociology.
There is no reason to exclude it provided that it's relevant to a well supported answer. However, most denominations do not hold science to the same standard to which they hold scripture and their own confessions and so it should probably not be a primary source as science is rarely a source of doctrine or dogma.