To download a picture from YouTube Community, you can follow these steps:

• Go to the YouTube website and sign in to your account.

• Navigate to the YouTube Community section by clicking on the "Community" tab in the left menu of your channel page.

• Find the picture that you want to download. If it is a picture posted in a community post, you can find it by clicking on the post and scrolling through the images. If it is a profile picture of another user, you can find it by clicking on the user's name to visit their channel page.
• Right-click on the picture and select "Save image as" to download the picture to your computer.