Hello @Deanna36,
Your community profile picture is the same as your normal Airbnb profile photo.
You should be able to change it as below.
If you've tried this and it doesn't work try logging out, clearing your browser's cache and logging in again.
Log in on your computer.
Click on your profile photo and select "Edit profile".
Then click on "Photos and video" on the left.
You should then be given the option to take a photo with your webcam or upload a photo from your computer.
It can also be done on the Android app by tapping on "Profile" at the bottom right and then on your profile photo.
Then click on the edit pencil icon in the top right.
Now click on the camera icon in the top right.
You'll then be given the option of taking a photo or uploading one from your photo gallery.
I don't have an Apple device so don't know the procedure on the iOS app.
Steve.