"I do not so much like you as love you." is correct, however I would personally change it to, "I do not like you as much as I love you.", the first sentence sounds a bit awkward to me in my opinion. If you are just looking for one answer between the two, the first answer is correct. "I am not so much interested in your appearance as in your soul." is correct, if it were to be the second sentence you would have to add "but" before the word "not" because they way its structured is very awkward to say, so the sentence would come out as, "I am interested, but not so much in your appearance as in your soul." The first sentence is better structured and you can read it aloud without having trouble trying to define the context behind it.

I do not so much like you as love you. (CORRECT) The sentences about the soul are both OK, but the first is the more usual structure.

thank you

"I do not so much like you as love you" is correct As for "I am not so much interested in your appearance as in your soul" and "I am interested not so much in your appearance as in your soul", both of these are correct. I think the second sounds better but it's just personal preference