A research project culminating in a Master of Science degree (MS) typically takes 18-24 months from time of enrollment and follows a similar trajectory regardless of the research topic. This document provides a Gantt chart illustrating a "typical" research timeline for a model-focused project. Note that thesis and graduation deadlines are approximate, and you are responsible for knowing and meeting deadlines specific to your degree.
Additional resources are available from the graduate school (https://grad.wisc.edu/current-students/masters-guide/#what-you-need-to-do).