It sounds like you're looking for a good subtitle or transcript for Young Sheldon Season 4, Episode 5 (titled "A New Home and a Traditional Texas Torture" ). The "m4p" likely refers to the file extension used for protected MP4 files (often from iTunes).
If you need (subtitles/SRT) for that episode, here are clean lines from the episode for reference: young sheldon s04e05 m4p