worship (someone's) idol

Translations
поклоняться (чьему-то) идолу
Many teenagers worship their favorite pop star as an idol.
Многие подростки поклоняются своему любимому поп-идолу.
Definitions
To greatly admire or revere someone, often to the point of excessive devotion or adoration, treating them as a role model or a figure of great importance.