1. The restaurant has no rating: it may be because the restaurant is newly opened or has not been rated by users. Google Maps usually shows restaurants with high enough ratings, but if the number of restaurants is small or the ratings are low, the ratings may not be displayed.
2. Data error or update delay: There may be errors or update delay in the scoring data on Google Maps. If you are sure that a restaurant has a score, but you can't see the score on Google Maps, it is probably a problem of data synchronization.
3. Geographical limitation: The score of Google Maps may be limited by geographical location. Restaurant ratings in some areas may not be displayed in Google Maps.
If you can't see the restaurant rating on Google Maps, you can try the following methods:
1. Update Google Maps application: Make sure that your Google Maps application is the latest version, so as not to display the score due to application problems.
2. Check the network connection: Make sure your network connection is normal. Sometimes, the unstable network may cause the score to fail to load.
3. Try other map applications: If you are very concerned about restaurant ratings, you can also try using other map applications or related websites to view restaurant ratings.
If the above methods still can't solve the problem, it may be because of other reasons that the score can't be displayed. I suggest you contact the support team of Google Maps, who can provide you with more accurate answers and help.