Trump only has one appeal as of right - to the Appellate Division for the 1st Department. One of the 21 Justices in the 1st Department was appointed by a Republican. Most of the Justices are black or Hispanic lifer left-wing legal activists. The chance that Trump draws a panel that will overturn all the felony convictions is very low.
The Court of Appeals can, but is not required to, review the Appellate Division decision. My guess is that it simply ... won’t.
The U.S. Supreme Court can only take cert if Trump identifies a federal civil right he can assert was violated and which was material to his conviction or a sentence he alleges to be excessive.
My prediction is conviction on most counts, with a house arrest sentence that would not permit him to campaign, and practically speaking would not permit him to serve, as President, but avoid the drama of sending him to prison.