Google Play does not update 'Download Badge' immediately. In order to see the unique install count of your app, go to Google Play console > Dashboard page > New users acquired (Select 'Lifetime' from top-right dropdown instead of last 30 days). This number should not be recognized as a sole number for a download count badge.
Google Play presents download badges based on "Total User Installs (total number of unique users who have ever installed this app on one or more of their devices)". Although my app exceeded 100 K New users acquired, Google Play application page shows 50 K+ installs. I opened a ticket about it since I had not found exact info about it. They replied as the number of downloads that contribute to gain a new download badge is not exactly the same with 'New users acquired'. The threshold count is Google Play's internal information and in some cases, install metrics may be discounted or removed entirely if they detect fraudulent installs.
The download range (2020) is like below:
K(Thousand) , M( Million) , B( Billion)
- 1 +
- 5 +
- 10 +
- 50 +
- 100 +
- 500 +
- 1 K +
- 5 K +
- 10 K +
- 50 K +
- 100 K +
- 500 K +
- 1 M +
- 5 M +
- 10 M +
- 50 M +
- 100 M +
- 500 M +
- 1 B +
- 5 B +
K(Thousand) , M( Million) , B( Billion)