The routes have specific schedules - see the website of the operator for details.
The tickets can be purchased on boat and the price for a single trip varies by route from SEK 30 (reduced) to SEK 130 (full).
Wikipedia https://ru.wikipedia.org/wiki/Стокгольмский_архипелаг
Official website http://www.archipelagofoundation.se/
Ticket prices http://www.waxholmsbolaget.com
Телефон +46 8 600 10 00
Адрес Sweden
Координаты 59°23'53.475" N 18°46'25.941" E