Legal Question in Civil Litigation in California

Nothing, unless you collect it. Read "Collect Your Judgment."

It's possible the defendant might file a motion to set aside the judgment and then file an appeal. If that does not happen, you might attempt to collect on the judgment. If you know where the defendant works, you can instruct the county sheriff to levy wages. The same with the defendant's bank accounts. If you don't know that information, you can schedule a debtor's examination (under oath) at the courthouse to identify assets, including vehicles, bank accounts, and anything else that might assist you in collecting.

Collect the Judgment. There are many techniques including levy on assets, wage garnishment, debtor and third party examinations.

That's an incredibly vague question. That's like me asking when I get to Vegas, what do I do next?

It is not clear whether you want to collect, like Mr. Stone points out, or the other side is appealing, or filing motions to vacate the judgment or for a new trial. It is not even clear whether you are in small claims, or limited civil, or unlimited civil. You may have to file a memorandum of costs, and give notice of the entry of judgment.

Can you be more specific?