Wiktionary
vb. 1 (context transitive English) to collect together by scrape 2 (context transitive English) to gather together something needed (especially money)
WordNet
Usage examples of "scrape up".
Spider, scrape up the salad, and poke the dish through the slide for more.
When they returned home from Mexico, he wrote them occasional letters, carefully expressed in the English he was learning in school and from every tourist with whom he could scrape up a conversation.
If you decide, you know, that an abortion is the thing, I'll scrape up the cash.
I just waited around, real calm and ladylike, for him to scrape up the courage to ask me.
That's not a lot, but the Tabbies did well to scrape up even that much after being surprised this way.
Still hoping somehow to scrape up the necessary coin without undertaking the arduous trip to Salem, Abel had delayed-and delayed too long.