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
Step 1:  Open  Camera
Step 2:  Open the  settings
Step 3:  Activate or deactivate  Mute
  1. Open Camera
  2. Open the settings
  3. Activate or deactivate Mute

Huawei Instructions