If you have been notified that you are a member of a class that has settled a claim with or won a judgement against State Farm, you should be able to call the court where the case was filed for more information. If you think you think you have unclaimed property, you can search the unclaimed property databases that are created and managed by the various states. California has a website at the following link:
This answer is for your information only and should not be considered advice. Do not think that this post establishes an attorney-client relationship between us.
I would contact State Farm directly and ask them about the lawsuit and make a claim under whatever procedures they had set up. If there was a class aciton they would have a record.
If you were a member of the class, legal counsel for the class would know. Otherwise, I encourage you to check googlescholar or another legal research site to see if the case is posted. Legal counsel in your community is likely to be of help if you have no other option.
NOTE: The use of the Internet for communications with the firm or this attorney will not establish an attorney-client relationship and messages containing confidential or time-sensitive information should not be sent.