Getting practice tests scores around 510-515 consistently - good or bad?

I tested 1/23 and ended up with a 500, which was a lot lesser than my fl scores I took then. I also observed that when I took the practice ones then, there were a lot of fluctuations in my score. But I am retaking it this month, and I took 4 fls so far and have been consistently getting around 510-515. Is it good or bad?

Thank you!