Open WhatsApp > tap More options > Settings > Notifications. You can change notifications for messages, groups, and calls by choosing: Whether to turn conversation tones for incoming and outgoing messages on or off
Why am I not getting WhatsApp notifications?
Make sure Do not disturb is turned off or you have allowed WhatsApp notifications in priority mode in your phone’s Settings app > Sound > Do not disturb. Make sure all of WhatsApp’s permissions are granted in your phone’s Settings app > Apps > WhatsApp > Permissions.
How do I unmute WhatsApp notifications on Android?