Data Science is not a single discipline rather an amalgamation of various disciplines working in conjunction to achieve a common goal i.e. the optimization of operations and performance. If you are learning Data Science, at one point, you will find yourself crossing over to learn about machine learning, deep learning, or AI. Besides these skills, you will also need to be experienced in programming, statistics, modeling, and handling massive amounts of data.
However, it is essential to note that the job openings are higher for Data Science professionals. If you are aiming for higher compensation, then machine learning and deep learning will get you there. Deep Learning is nothing but a broader part of ML methods.
Learn about the difference between Data Science, ML, Deep Learning, and AI from this detailed blog published by Intellipaat.