Main Point
Gist, Main Idea, Essence
The needed point is the main point. It's the gist of what you're trying to say.
ようてん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
もう少し要点をせいりしてからいけんをのべてください。
Please state your opinion after rearranging your main point a bit more.
ユウサクが要点をはあくしているとは思えないんだけど。
I don't think Yusaku got the gist.
いいから！早く要点を言ってよ！
Come on! Get to the point!