I don't know if you want to study undergraduate or graduate. There is no undergraduate major in library science abroad. Only after studying other majors can you apply for a master's degree in library science.

Well-known universities offering library science majors are:

Graduate School of Library Science, Informatics and Media Studies, University of Tsukuba, Japan

College of Information and Library Science, University of Dublin, Ireland

Royal Danish Library Institute of Science and Informatics

School of Information Management, Victoria University, Wellington, New Zealand

University of alberta Library Science and Information College.

School of Library Science, Archives Science and Information, University of British Columbia, Canada

School of Information, University of Toronto, Canada

School of Library Science and Information, University of Montreal, Canada

School of Information, Charles Stett University, Australia