There is no general purpose answer, as the qualifications required to be a coder vary depending on the specific field and level of coding you wish to pursue. However, in general, most coders will need at least a basic understanding of computer science principles, as well as experience working with code.
If you are interested in becoming a coder, it is recommended that you start by taking some basic computer science courses (if you have not already done so), which will teach you the fundamental concepts behind coding. Once you have a strong foundation in computer science, you can then begin learning specific coding languages and working on coding projects. Many coders also choose to pursue further education in computer science or related fields, such as software engineering.
In terms of experience, most coders start out by working on small personal projects before moving on to larger ones. As your skills and experience grow, you may eventually want to consider freelance work or even starting your own development company. Whatever route you decide to take, always remember that practice makes perfect – so keep coding!