To be clear, a sexologist doesn't do anything in bed!
Some people mistakenly believe that a sexologist offers hands-on experience for learning sexual skills. However, that's not the case. A sexologist helps their patients accept their sexual nature and meet related goals.
Sexologists are competent professionals who follow the Code of Ethics. They must remain respectful and promote the sexual rights of all their patients.
A sexologist has studied human sexuality, including aspects of:
anatomy
physiology
psychology
It means they are trained to understand how the human body works during sex and why and how people's minds work. They can help you learn about sexual behavior and pleasure and how it differs for everyone.