The penalty in California for driving without a license typically includes not only a fine and court fees but the towing and impoundment of the vehicle the unlicensed driver was operating. If you have had a prior conviction for driving as an unlicensed motorist in California, the state may be able to take the vehicle away from you as forfeiture.
In California, it is a misdemeanor to drive without a valid driver's license. Also, the law requires a driver to have his license in his possession while driving. Driving with a suspended or revoked license is a misdemeanor carrying a punishment of five days to six months and/or a fine of up to $1,000 for a first conviction.
It is also mentioned that if the minor does not yet have a license, the minor will be delayed in receiving one. The CA Department of Motor Vehicles should be able to give the minor more information on what licensing penalties may apply for driving before they have obtained a valid license or permit.
Typically the county court of the jurisdiction you were cited in will assign the fine for your citation. To get information on traffic tickets you may try going the self help CA court site. If you are unable to find out the fine amount or list of penalties here for your infraction, than you will need to phone the court or other entity listed on the ticket to get this information.