Funds on dead brothers paycard

Courts are closed all over the country.
There are some exceptions for certain criminal offenses.
For the most part, civil matters aren't being addressed during the panic-demic.
I suspect contacting the employer will also be difficult.
But, you've got nothing to lose by trying.

Truth is the entire planet is hunkered down in their "hidey holes" trying to avoid contracting that Chinese disease.

 

Assuming that he had very little in the estate, you should be able to use a simplified procedure in California. Ask they bank if they have a specific form (small estate affidavit) they would like you to use, or use the sample form that the state provides. See Simplified Procedures to Transfer an Estate - probate_selfhelp

Here is a direct link to the state's sample form: https://www.courts.ca.gov/documents/Affidavit_personal_property.pdf

 

Who are "we"?

Not really sure what the rest of your post means, but you might want to read about California's small estate procedures.

 

And when you read those links you have been given keep in mind that the MoneyNetwork paycard is no different than a checking account. In this case, the bank is Metabank.