No. Science can only prove or disprove the existence of physical things – that is, things made of matter that take up space. But angels are not physical beings, like humans; they are pure spirit.
At best, people who refuse to use any method except science to acquire knowledge must remain “agnostic” (or uncertain) about the existence of angels since science is incapable of answering such spiritual questions. In other words, there is an absence of scientific evidence for the existence of angels; but only because science cannot produce evidence for angels since angels are not physical beings.