Of course, there is another thing called a calligrapher's card. If you can use this as a calligrapher, it depends on the skill.
If we only talk about calligraphy teachers, the salaries of teachers before the calligraphy college entrance examination range from teaching assistants to bishops, ranging from 3000 to 15000. This should be the normal level, of course, it does not rule out that you are a special teacher.
University calligraphy teacher, emmmmm, that depends on how much money the school gives you.
Calligrapher, to be honest, I have never seen a calligrapher who needs a fixed salary. The National Academy of Painting has it, but the level is too high to understand.