Points
Score
noun
The number of points is how many points there are (aka the score).
てんすう
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.
ワニカニに百点まん点で点数をつけるなら、何点になると思いますか？
If you were to give WaniKani a score out of 100, how many points would you give it?
この点数は、こないだくれたプレゼントのおかえしだよ。
These points are in return for the present you gave me.
「どうしてそのテストでこんなに低い点数をとったの？」「欠席のせい。つまり、僕の隣の席の子が休んでたんだよ。」
"Why did you get such a low grade on that test?" "Because of absences. I mean, the kid who sits next to me was absent."