Math, statistics, and coding are all helpful for a career in machine learning. Programming is a vital component of working with machine learning, and you'll also need to have a good grasp of statistics and linear algebra. When you're ready to dig further into machine learning, read the textbook Deep Learning by Ian Goodfellow. You can also get into practical coding with a platform like Kaggle, but I recommend really studying the basics before you jump into that. Otherwise, you're solving problems without understanding why things work the way they do.