Dad has absent for 8 years now filing to see them in Dec and I moved to NV after responding to the filing. What would happen if I Dont show up 2 court

You don't mention where the proceeding is, but it is never a good idea to ignore a court hearing; you should expect that whatever the other side has requested, from contact to custody, will be granted based on your non-opposition.  You should contact counsel wherever that hearing is going to be held, and make sure someone files an opposition and appears.