Here in UK there is no Statute of Limitations for crimes above the level of Magistrate's Court. So even sexual abusers who committed offences many years ago can be prosecuted. 'Old' crimes are still crimes and should be punished.

It's not for the Church (of any denomination) to take action. It's a matter for the Police and the Courts of Law. Victims should approach Police with their accounts of what took place, whereupon the CPS will examine evidence and decide if a prosecution is possible.

However, on release from Prison, or after sentence has been pronounced, any sexual abuser should be expelled from the Church concerned. Any other approach would be seen as condoning the offences.

It is for the victim to 'forgive' or not, depending on their state of mind.