I think Both sentence are correct. But its depending how you use it. I only mad six dollars a day. or I only got six dollars tip a day. I don't know this sentence is confusing.

I only made 6 dollars a day - 'made 6 dollars a day' implies that you worked and received 6 dollars for that work I only got 6 dollars a day - 'got 6 dollars a day' could mean that you received 6 dollars as a gift / allowance without work