You can start by studying a lot of mathematics and physics. Mathematics is an essential components to working in physics professionally. You might find a university that has careers in physics, or similar areas.Then I guess you might apply to a job position where such knowledge is required - this may be in teaching, in research, or in applied physics.
To become a physicist, you typically need to earn a bachelor's degree in physics or a related field, followed by a graduate degree (usually a PhD) for more advanced research positions. Gain experience through internships or research opportunities, and develop strong analytical, mathematical, and problem-solving skills. Keep updated on developments in the field and consider specializing in a specific area of physics.