Optimization scores in Google Ads will now include shopping campaigns as well as search campaigns.
Google Ads will assign an individual score to each campaign type, and provide a combined score at the account level.
Scores for shopping campaigns range from 0% to 100% – a score of 100% means the campaign is optimized to perform at its full potential.
Along with optimization scores, Google Ads will offer recommendations based on its evaluations of each campaign type. – Read more