To C.Angel: Maybe I can help, even though, at the moment, I have next to no idea on how to score in IN, as I haven't gotten to play it extensively yet. Perhaps a good idea, if you want to eventually score in IN in, say, the easier difficulties, for instance, is to focus on the harder difficulties of the game, start from hard mode (I know you mentioned you 1cc'ed that already, but try to clear it consistently, for I believe there's a difference between merely clearing and getting consistent, and it's something I'm beginning to learn about myself, along with a lot of other things, and suffice to say, my STG outlook underwent some changes), then go to lunatic, practice hard and well, 1cc it for the 1st time, then work to start to clear lunatic consistently, so that you will gain the power of IN lunatic, and you can take that with you to whatever you choose to do next, and thus, make, say, playing for score on the easier difficulties a less of a pain, or so I think. With Imperishable Night having one of the best practice systems in all of the Touhou games (spell practice is too good!) it can be done!
But, like I said, I know nothing about scoring in IN, but I think that could be the best course of action, I believe. Best of luck, don't give up! I've known about you for some time, C.Angel! You're working hard, and I'd sure like to see you succeed one day! ^^ Well, I'm working on that myself as well, haha, so I guess, what am I saying? ^^;