how much is apple music per year

You get 12 months for the price of 10 (e.g., $99 in th U.S.). See: Join Apple Music on your iPhone, iPad, iPod touch, Mac, or PC - Apple Support

Only the Apple Music Individual subscription has an option for a one year plan. Apple Music Family and Student are per month only.

The price depends on your country/region, but the year-price is usually ‘12 months for the price of 10’.