Pro-se here, and the Defendant's Answer to Complaint is a flawed mess, how do I get it (or most of it) striken/thrown out?

Sometimes it is a successful strategy to move for summary judgment on some or all of the matters in the pleadings.

What is drug court ?

"As an alternative way to deal with drug-related criminal charges, drug courts are judicially supervised court dockets, handling the cases of...

I live with my mom of two years my sister has poa .she also altered my mom's will in 2015, we do not talk

You should probably retain an attorney to watch out for your interests. Allegations of an unauthorized changing of a will are serious.

See https://www.immihelp.com/visas/ds-160-usa-visa-form-guide.html

If a father is order to pay child support by a

A US company probably has headquarters in the USA subject to the jurisdiction of USA courts.

A USA child support order is probably enforceable to the extent of garnishing wages with a USA company.

What do the letters IT stand for before a case number

Perhaps you can call the clerk of the court about that.

Is a new child support order retroactive for expenses after the "As of..." date?

If a child support order requires clarification, you can make a motion to the court requesting that.

What happens when an alleged abuse or neglect case with CPS is founded? What options do I have? How it affects future BG checks?

According to the CA website ( https://www.dshs.wa.gov/ca/parent-resources/your-rights-and-responsibilities.): "As a parent, you have rights in...

You can petition a court for emancipation at age 16. ...