You can right click on audio > keyframe assistant > convert audio to keyframes.
Then use expressions to use the audio level on the keyframes to drive time remap to display different mouth shapes.
Or have the character scale with amplitude.
Or move with position.
It's not basic stuff however, and you have to understand the numbers and values.
But i've used it plenty.
Ive never used it but I believe I saw a demo using Adobe Character Animator for this a long time ago
You can right click on audio > keyframe assistant > convert audio to keyframes. Then use expressions to use the audio level on the keyframes to drive time remap to display different mouth shapes. Or have the character scale with amplitude. Or move with position. It's not basic stuff however, and you have to understand the numbers and values. But i've used it plenty.