Do I have to go to court if I get subpoenaed?

Yes you do.
If you do not a warrant will be issued. You will be arrested and held until you appear. Then the judge will sentence you for contempt. Expect jail time.

You are being ordered by the court to be there. Failure to show and you can be found in Contempt of Court. That could mean a fine or jail. Worst case I've seen, they judge issued a warrant. Once the witness was arrested, they remained in jail until the trial could be rescheduled. That was an extreme case, but it is possible.

How do you get out of it? Call the person that issued the subpoena and ask to be released.

Yes you have to

IT depends on what the subpoena says. If you are a Witness to something, you Should go but don't have to(although they might hunt you down). If you are a party to the lawsuit-then Yes, you have to go.

You have to go. If not you will be charged with contempt of court.

you MUST appear unless you can get a JUDGE to "quash" or nullify the subpoena. If you do not appear and have no excuse, YOU can be arrested for contempt of court. When you do appear, you are owed a WITNESS FEE by the party that subpoenaed you to compensate you for time lost from work or other thing you had scheduled.

You have to go. Consequences is a bench warrant and arrest. You can't get out of it.

Yes you do, you can be held in contempt, you can't.

A subpoena is a court order to comply with the directive of the subpoena. The word "subpoena" is Latin for "under penalty" and means you are to comply under penalty of the Law. A failure to show up is a legal violation and subject to legal penalties. These penalties can be severe - including jail time.

Do I have to go to court if you get subpoenaed? Yes, of course, that's the law. Failure to comply can result in incarceration.