Your picture of the console is showing permissions assigned to your Amazon S3 bucket, not the object itself. Such permissions only grant access to list the contents of a bucket, or upload to a bucket.
If you wish to grant public access for that specific object, then:
The link should now work for public access.
However, if you wish to grant public access for all objects in the bucket, use a Bucket Policy such as Granting Read-Only Permission to an Anonymous User. This can also be used to grant public access to a particular directory/path within a bucket.