How many days it will take to learn video editing ?

just copy what already works to start. find 5 viral shorts or reels in your niche, download them, and drag them into capcut desktop. then try to recreate them frame by frame... match the cuts, the text, the zoom ins. you learn the actual software way faster doing that than watching hours of generic youtube tutorials, and you get a feel for pacing. dont worry about making original stuff yet, just learn to copy the winners first.

Agreeing with @Colonel Potter on copying winners, but to add to that... instead of editing random stuff, go rip some popular podcast audio. throw it into capcut and try to force yourself to add a visual cut, zoom, or b-roll every 2 to 3 seconds. thats the retention hack right now. you can grab free b-roll from pexels or pixabay so you dont have to shoot anything. learning the software is easy but training your brain to keep the viewer from scrolling is where the money is.

couple months if you practice every day start with capcut or premiere just edit random clips and watch youtube tutorials