Have you ever heard the term "mph"? Derivations like that basic calculus (though we have equations to short circuit all the heavy lifting there). Calculus is one of those things that you don't really /need/ in many places, because there's other ways to do it, but judicious application can make things a lot easier. Any sort of statistical analysis, or trying to find something (like speed, acceleration, or rate of change in acceleration) in terms of one factor as related to another factor (distance/time, change in speed/time, change in acceleration/time) is probably going to be helped by knowing some calculus for example.
I dont like maths becouse i always wanted to become pathologist or metal musician that is able to live on money from music.
Music and math have always had some strong correlations. And science and math, too. You don't need them to be a good musician, but if you're playing electric instruments it doesn't help. Heck, you've heard of Queen right? Brian Mays has a PHD in Astrophysics and built a bunch of his equipment, like his guitar, himself, in addition to composing a number of Queens big songs.
Art Garfunkel, who I'm sure you've heard of, was just shy of a Doctorate in pure mathematics. He does still have a masters. Dexter Holland from the Offspring is another one. And these are just musicians that are /explicitly/ involved in something involving lots of math - most every good musician I've met knows some math decently, and most every band is only helped by having someone know it pretty well.
As Diane Nalini said: "Most musicians I know have a strong grasp of mathematics. They have to. Keeping the beat, counting out divisions of beats, thinking about harmony. Music theory is almost dauntingly mathematical."