I saw the wr skip all the cutscenes but when I start a new file i cant skip, how does he do that?

You can't skip cutscenes the first time you encounter one. What happens in the runs is as soon as they enter a cut scene, they press "Start", "Restart Battle" (or chapter). Then when the cutscene loads again on your second time seeing it, there will be a "Skip Cutscene (Y)" button in the bottom right!

oh that makes sense, thanks!