How should I prepare for the new PSAT?

Hi, I am a junior this year and looking for the PSAT this 14th.
I was provided a practice test from the school and I’ve done it yesterday.
I scored it and I got a 1360/1520.
I do not know if this is a good score, and I do not know if I can qualify to the National Merit Scholarship with this score.
Therefore, I think I would need to prepare for it a little bit.
And sadly, there are almost no preparation besides Khan Academy.
How should I prepare for this new PSAT? I have no clue.
Thank you very much!

You could try practice SAT tests that are available through CB as the format is similar.

I’ll try that. Thank you very much