The popular blockchain-analyst, Willy Woo shared his estimation about the current state of adoption. As he says, right now around 1,7% of the population own BTC, this is roughly 120 million people. This is very similar to another study, which suggests, in 2020 Q3 were 101 million users.
Based on the theory of technology cycles, we are innovators, beta-testers, not even early adopters. They come after the first 2,5%. In this case, crypto may be at the very beginning of the march.