with out cheats, unless my game just hit a bug or something. Anyways I need to know how to save my game after the end battle and I would like to finish side quests. I am currently locked in the Asylum and there is no way out. Portal doesn't work and of course the front door is magically sealed. There are no monsters to fight or anyone to talk to. Like I said the first person who helps me with this and I will tell them how I got $10,000,000

I assume that you are in Spellhold. You need to release the prisoners by paying the guard 2000gp. They will then help you attack Irenicus and after his defeat Saemon will offer you a deal to escape. It is best to accept as otherwise you will miss out on a major area. Otherwise search Irenicus's study for the key to open the Portal room to go straight to the Underdark.