Trump is further right economically and more authoritarian than both, but these morons that buy into the "he's a socialist" bogey man scare tactics either don't know how how to define socialism, don't realize America has embraced many elements of it over time, or are comparing Biden against some free market / low government standard that hasn't existed in the United States for at least 100 years, if ever.
Hell, Trump is pushing EOs to fix drug prices right now. Cry about socialism there. These folks don't pay attention or only care about it when a democrat tries the same thing. Hypocrites or morons. One of the two.
Trump is not very far right at all. He basically doesn't have an ideology beyond a view on trade that is somewhat mercantilist I guess and related to that, that a country should look out for its citizens first, which I think is what drives his anti-illegal immigration position. Even those issues don't neatly align on our left/right spectrum, but outside of that, he's really all over the map. He doesn't have any concern about the size of government (either as a matter of spending or scope) which is leftist, he's in favor of a strong military (which is right at the moment), he's wants to favor real estate investment (which is a personal quirk based on his experience, not a lef/right issue). His administration does well on some issues important to the right b/c of who his administration is staffed with, but his rhetoric makes it clear he doesn't give those issues a lot of thought one way or another (i.e., free speech, free exercise, judges, regulation roll back etc.), and certainly on the whole has acted as a pretty mainstream, right administration, but he himself is a good bit left of his administration on some issues, a good big right on the others, and just plain uninterested in a lot of issues historically and currently important to the left and right.