If my wife lied about 12 times on facts I can prove during court. Can I file charges for perjury? What is the statue of limitation?

Only the district attorney can prosecute criminal claims.
I cannot answer questions relating to the statue of limitations for a criminal matter.

I heard it is very hard to prosecute anyone for jury in divorce cases. People lie all the time.

Jury trial are not available for divorce cases. Only with respect to fault in an alimony trial.

I heard it is very hard to get the DA to go after someone for perjury. It seems to be the norm when it is family court. Have you ever heard of anyone being prosecuted for perjury in family court disbutes?

I personally have not.