It's not a criminal trial so conviction isn't possible. Being a civil case the standard of liability is lower than criminal cases, and all the jury has to decide is if the evidence suggests the suit is likely true. Trump isn't attending which is a bad decision, but he probably would be a bigger liability for himself in court, not being able to keep his mouth shut.
I think the case has a good chance of going against him, and that is due to witnesses that confirm Carroll said he raped her soon after, and explained why she didn't report it to the police. And on top of that all of the statements Trump has been caught saying that shows his attitude about sexual assault is that it's no big deal. If Trump loses I'm sure he will appeal, but in civil cases it has to be due to an actual problem with material evidence, not just because the person lost, so good luck there. Then it will be a matter of Carroll collecting the judgment. Trump will have to pay unless he's bankrupt, and then Carroll could file a lein on assets.