What is Bob Ewell's story of what happened and what he saw on November 21st?

Bob Ewell said that he was collecting kindling when he heard Mayella scream. He dropped his kindling then ran and then climbed over the fence and then ran to the window to see what was going on. That's when he saw Tom Robinson with Mayella. Then he ran to Heck Tate for help.

To Atticus' surprise, Bob Ewell did not get a doctor to help Mayella.