In that sentence, How'd is 'How did' or 'How would'?
It may be a stupid question to ask, but as a non-native speaker, that kind of things confuse me.
and sorry for my bad English.
Thank you in advance.
The answer to your question is context. The meaning of a word can often be confusing until you see it used in a conversational setting. If we were talking about an art course I HAD taken, "How'd" would mean "How did you like." If we were talking about a course TO BE taken in the future, it would mean "How would you like."