Patreon is a membership platform that allows artists to obtain funding from their fans or patrons, on a recurring basis, or per artwork.
To add a Sketchfab embed to a Patreon post, you'll want to create a Link post. Click New under the Posts section on the left-hand side and choose Link as the Post Type.
Paste your Sketchfab model URL in the field provided, and fill in a title and description for your post.