I am wondering what I am doing wrong. . . The body sensor icon that is to the right of the microphone in the videos I have watched isn't even showing up for me. So I don't know if the body animation is still in "Beta" or if I am doing something wrong and that is why its not showing up. Can anyone help me with this?
As far as I know, it is still in beta.
Yes, if you're using Character Animator 2021 then you won't see Body Tracking. The good news is that you can install the public betas from the left side ("Beta Apps" category) of the Creative Cloud Desktop app. These can be installed alongside the public versions without causing any issues since they get their own sets of preferences.