With anything made when 20+ episode season was the norm, I’d recommend just searching for a skip list. I remember the /r/DaystromInstitute skip lists being pretty good: https://old.reddit.com/r/DaystromInstitute/wiki/index#wiki_episode_guides

I’d recommend the same with more modern stuff, because the ratio of good episodes to bad sure as hell hasn’t gotten better despite shorter seasons, but the death of episodic story telling makes it pretty hard to skip episodes.