How quickly the first reviews appear on app page?

Unfortunately, there is no official data you may use to analyze this information.   First of all, you can check this information only for your own application in the Google Play developer console, so when you enter the application and go...

The keywords are quite different, and the process of keyword promotion for different keywords is different as well,as are the results you may get. If you want to keep the position, it is necessary to set up the campaign even after you reach the top...