The Huawei smartphone automatically informs us about available security updates. If we missed the notification or erased it, we can always check for security updates manually and install them if available.

Android 10 | EMUI 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Security
Step 3:  Tap on  Security update
Step 4:  Tap on  Check for updates
  1. Open the Settings
  2. Tap on Security
  3. Tap on Security update
  4. Tap on Check for updates

Huawei Instructions