If i get a summons to court for an estate do i have to aprear?

Yes.
Unless you want a default judgement against you.

Why wouldn't you want to appear is it an inheritance? If you are in trouble with the law maybe not but... why wouldn't you want to go? Oh and a court summons is legally binding so you do have to go if you don't someone will come to take you.

... Oh and a court summons is legally binding so you do have to go if you don't someone will come to take you.

Little Helper, you are not being at all helpful. This is flat-out wrong.

Subpoenas and summons' in criminal cases are different. But in a probate matter, which is on the "civil" side, a summons doesn't compel one's attendance.

If you ignore it and don't show up, the relief requested can be ordered. It's basically giving you notice and the opportunity to be heard. If you choose to forego that opportunity you can't later argue that what the court decided was incorrect.