The notification badge (app icon indicator) for apps are displayed by default on Samsung devices with the number of notifications, but a simple dot (without number) can also be displayed in the Home screen settings in addition to the number.

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Display
Step 3:  Tap on  Home screen
Step 4:  Tap on  App icon badges
Step 5:  Choose between  Number  and  Dot
  1. Open the Settings
  2. Tap on Display
  3. Tap on Home screen
  4. Tap on App icon badges
  5. Choose between Number and Dot

Samsung Instructions
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