First time hit and run. Property damage.
Assuming that you cannot beat the case for lack of evidence or have it dismissed through a civil compromise, VC 20002(a) is punishable by between 0 and 180 days in the county jail, a fine, restitution, and a period of probation. If there are no factors in aggravation and you have a clean record, the typical consequences are much closer to the minimum allowed by the law than the maximum. But every case is different and no one can guarantee you any outcome. You should consult an attorney