Some pay only per install some per click. You should not calculate it like this x views will do x money.
It really depends where your app will be used.
If its in usa, europe u will get high imperesion rpm. If your app run in india then u will not make much money.
U can make very nice income from a 100k app that most users are from usa and europe.
You make money from users clicking on ads. Not watching them. Also, for ad revenue 10000 downloads is not much. You need ten times that for any decent income.