To start your career in Data Science, You need to be proficient with Python or R programming, Descriptive and Inferential statistics, Machine learning algorithms, Deep learning algorithms, and visualization tools.
Apart from the knowledge of technical skills, it is difficult to get your first job in data science for a fresher. So, you have to create your market by uploading your good projects on GitHub, write blogs about data science topics. Take a good data science course that provides certification after completing it. This will helps the interviewer to believe in your skills
I would suggest this Data Science Certification by Intellipaat that covers all the topics required for data science with industry projects.
You can watch this video to know the best learning path for data science: