In hotel management, which is the best course for studying and high salary?

It depends on your skills. Food Production gets you a really good salary based on your skills.

I suggest you to go for hospitality management and from UEM Kolkata a well-established college with good placements. To know further about programs scroll the link mentioned here https://www.shiksha.com/hospitality-travel/hotel-hospitality-management/course/bachelor-in-hospitality-and-hotel-manageme