The phrase "scratch" is not a common term used to refer to money. It's possible that you've misheard or misunderstood the phrase. Money is often referred to as "cash," "dough," "bucks," or "bread," but "scratch" is not a typical slang term for money.
It's important to remember that slang terms vary widely depending on location and cultural context. If you heard someone use "scratch" to refer to money, it's likely they were using a local or regional slang expression.
If you can provide more context about where you heard this phrase or the situation in which it was used, it might be possible to determine its meaning.