The source – support.google.com
Earned an optimization score for Video Action ad campaigns. Optimization score displays personalized recommendations. They will improve the performance of your Search, Display, Shopping, and now Video campaigns. Moreover, there were recommendations for improving the format.
Tips will appear below the optimization score in the Recommendations section. There, advertisers will see how Google evaluates the quality of search ads, settings for Shopping campaigns, display campaigns, and Video Action video ads.
According to Google, advertisers with Video Action Optimization scores close to 100% get 50% more conversions per dollar and their campaigns have at least 40% higher conversion rates.