If you want for the sake of reading exactly what was said, rather than timed subtitles for a video player, transcript blogs are invaluable.
The gold standard. Look for "Season 1 Complete" packs. Check the "User Ratings"—usually, anything with a high download count and a "Trusted" uploader status will be perfectly timed. Modern Family English Subtitles Season 1 High Quality
Official studio-grade English and English SDH subtitles. If you want for the sake of reading