Amount Sold
Sales, Proceeds
noun
The selling that you've raised (上げ) is the amount sold or number of sales. Think of a graph going upward, where it's rising as you sell more things.
The reading for 売 is the one you learned with 売る. The reading for 上げ is the same as the reading for 上げる, a word you learned previously. If you know those two separate things, you should be able to combine them into one awesome vocab thing.
だんだん売り上げがへってきた。
Sales gradually decreased.
アメリカ人人気はいゆうが主えんしたハリウッドえいがのDVDは、日本だけで売り上げが八百万まいになった。
The DVD of the Hollywood movie in which a popular American actor played the main character has sold eight million copies in Japan alone.
あの性差別の広告のせいで、売り上げが激減した。
Sales have decreased rapidly because of that sexist advertisement.