How long will it take to get a Danish visa? It is urgent.

It usually takes three months if you ask.

Write an e-mail to the professor in your school. If they call the immigration office for you, your documents will be downloaded soon. In addition, if you write to the Immigration Bureau yourself, you will usually receive a reply in about 3 days. They will give you a document number for future reference. According to experience, it should be helpful to send an email to the immigration office. In my case, immigration only takes about 5 days. It was the embassy that delayed most of the time. They will fax the instructions to the embassy after examination.

Personally, I suggest you write to the Immigration Bureau and tell them that you will start school soon, and they will consider it as appropriate. In fact, the day after I received the letter from the Immigration Bureau, I got a call from the embassy asking me to apply for a visa next week. Hehe, good luck.