I removed the word like. Like is used to mean similar to. Kyudo isn't similar to Japanese archery. It is Japanese archery. I changed fascinated to enjoyed. You could say "I was fascinated by how much fun it is," but you wouldn't say you were fascinated by the fun. Being fascinated is thinking. It's really enthusiastic thinking. Fun isn't something you think about. You have fun and you enjoy it. Then afterwards you can think about how much fun you had. I changed "for Kyudo" to "in Kyudo." "For" is ok here, but "in" sounds more natural. Think of the world of Kyudo. In that world are many things you do, and for them you need to concentrate. In that world concentration is important. In Kyudo concentration is important. The last sentence, again, is probably correct, but I changed it to sound more natural. You could also change want to wish. " I wish everyone could experience how much fun it is."