It's possible that you are misremembering or that the information you have is inaccurate. Red Skelton was a comedian and actor, and while he was known for his patriotic humor and love for his country, there is no evidence that he ever recorded himself reciting the Pledge of Allegiance.
If you have any additional information about the context of this potential recording, such as the year or the specific program it may have been on, it might help to clarify the situation.