I am not aware of any Korean university that offers a Master in Physiotheraphy in English so you will probably have to start by learning Korean to at least TOPIK3 level, probably higher.
There are no guaranteed scholarships. Some universities have partial scholarships that you can apply for, but usually, you will need your own money to get a student visa and cover your tuition fees and expenses.
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Read more:
Study in Korea
List of universities in South Korea
Study physiotheraphy abroad
Scholarships for studying abroad