I am an electronic producer, and I was wondering if electronic music producers even write down their music on scores? Is that important enough to do for this category of music genres? Or should I do despite that others don't?
It's not important, in the sense that it is not needed. There are different input dynamics, you use the one that you are more comfortable with.
It can be important, though. If you are not comfortable with piano rolls, sequencers, or performing the piece, or with any other notation/input system, and you are proficient with score writing, then writing scores will be very important for you!
Just use whatever is more efficient and/or whatever you enjoy the most and/or whatever is needed.
All you'll need is either a DAW with a good score editor, or a good score editor that can translate to MIDI.