I have "faith" in the sense that I don't think most scientists are faking scientific papers. I have faith that when the NIH publishes a study it's usually accurate. I have faith that physics and mathematics is a good way of modeling the world.
The reason I say "faith" is because conceivably I could dispute every paper and try and replicate it on my own, and try and go through elaborate proofs to make sure every mathematical theorem is correct, and I think there might even be value in that, but I also have a life to live. At some point, I have to put my trust into others and just hope it works out, and usually it does.
Of course, this falls apart, there's been plenty of cases of scientists faking data, the NIH and CDC have gotten stuff wrong before, and plenty of things in physics have been proven wrong either mathematically or experimentally, so of course it's not a perfect system (nothing involving trust ever is), but I will acknowledge that way I live my life involves something that could be considered "faith".