Danish is the official language of Denmark.
Danish and English are the two languages most often used for degree programs. If you are learning a language other than your mother tongue, you must show proof of your linguistic ability. Typically, to achieve this, one must take an English language test or present test results. You might be able to enroll in a language course to help you get better if you don't meet the necessary standard.
You should still try to learn as much Danish as you can even if you can study in English. The best approach to practice is to converse with locals and other students. Your daily life will be more joyful thanks to this talent, which will also look fantastic on your CV or resume.