By default, the camera sounds are turned on. If you don't want a sound for each picture you're taking, you can deactivate this in the camera settings.

Android 10 | EMUI 10.0
Mute camera tone -  Open  Camera
Mute camera tone -  Open the  settings
Mute camera tone -  Activate or deactivate  Mute
  1. Open Camera
  2. Open the settings
  3. Activate or deactivate Mute

Huawei Instructions