I like basketball games because they score lots of points. That's what makes it so interesting.
I get excited watching basketball games because lots of points are scored by both sides usually.
この場合、次のような言い方ができますよ。
ーI like basketball games because they score lots of points. That's what makes it so interesting.
「バスケの試合はたくさんの点を取るから好きです。それが試合を面白くさせる」
to score lots of points で「点をたくさん取る」
ーI get excited watching basketball games because lots of points are scored by both sides usually.
「たいてい両方のチームがたくさんの点を入れるから、バスケの試合を見るとワクワクする」
to get excited で「興奮する・ワクワクする」
ご参考まで！
カナダ 
