I just got my PSAT scores back!!!?

So I just got my scores back from the PSATs and I was wondering if it's good, and what my score would be like for the SATs had this been it. I got a 51 in critical reading, a 42 in mathematics, and a 42 in writing skills. I'm a sopre and currently enrolled in geometry. It also says on the top that in critical reading I scored higher than 78% of sopres, in mathematics I scored higher than 45% of sopres, and in writing skills I scored higher than 54% of sopres. So is this all good or do I need lots of work still? And again, what would my SAT scores been if this was it? (Along with is that good)