It's a complicated algorithm so I won't go into the details but essentially, you get roughly 25% of the vote you give as a reward.

Your current vote is worth under $0.01 cents... therefore the curation rewards is basically negligible at this point.

Even I barely generate anything from curation rewards and I have quite a bit more SP... I'd advise just trying to create good quality content and build your SP up over time.

The more SP you eventually get, the more your votes will be worth.

Good luck :)