Due to Corvid-19, the Sacramento State Fair and the Orange County Fair have been cancelled for this year, including their wine competitions. If you are interested in having your wine judged this year, one option for amateur winemakers is the Winemaker Magazine International Amateur Wine Competition, which is accepting wine entries until June 1, 2020.

https://winemakermag.com/competition/competition-overview

For commercial winemakers, the SF Chronicle Wine Competition is evidently still scheduled and entries are due by November 15, 2020. https://winejudging.com/