When we receive messages through Messenger, such as WhatsApp or other app notifications, a small dot is displayed by default above the app icon to alert us to new messages and notifications.

The notification points or dots can be disabled on the OnePlus smartphone at any time.

Android 10 | OxygenOS 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Apps & notifications
Step 3:  Tap on  Notifications
Step 4:  Tap on  Advanced
Step 5:  Enable or disable  Allow notification dots
  1. Open the Settings
  2. Tap on Apps & notifications
  3. Tap on Notifications
  4. Tap on Advanced
  5. Enable or disable Allow notification dots

OnePlus Instructions