Hallo @ Sidra,
in order to enrol for an M.Sc. in Neuroscience you'll need a Bachelor degree in a related field, e.g. in medicine, pychology, biology or even linguistics, depending on the design of the study course.
I found an English-instructed programme at the University of Oldenburg, which requires a Bachelor's degree in the fields of neuroscience, biology, or in another related field (e.g., psychology) or in natural sciences and mathematics (e.g., engineering, informatics).
You will find the full information here: https://www2.daad.de/deutschland/studienangebote/international-programmes/en/detail/4672/#tab_university
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