I don't think you know what it means.
Fascism is one form of authoritarianism. Authoritarian regimes share a lot of bad qualities, but there are two main points that separate right-wing authoritarianism -- fascism -- from left-wing authoritarianism -- communism. They are:
1. A crony capitalist economic system.
2. Supporting the social and racial status quo. That is, being anti-revolution.
Trump cult members hit both of those points, and they're authoritarian-followers, which puts them in the fascist category. Liberals don't support any authoritarian policies, so they don't fall in either the fascist or communist category.