In December Google had said that AMP pages may get a ranking boost but such is not the case as of now, said John Mueller in a Google Hangout.
John said in a Google+ hangout that AMP is not a ranking signal at the moment. At 15:50 in the video, he said, “It is obviously one way to make mobile friendly pages, so that might be an option where you do that. I have already seen some websites where they have moved the whole website to the AMP format. Obviously that is mobile friendly setup so it kind of picks up the mobile friendly thing. But just AMP is not something that we have a ranking signal at the moment.”AMP Not Yet A Ranking Signal, Says Google!,