Yes, the sentence is grammatically correct. However, it could be made clearer with slight rephrasing. For example:
“On the other hand, the level of ‘dislike’ follows the reverse order.”
This version makes it a bit more concise and maintains the original meaning. If you prefer to keep “degree,” you could also say:
“On the other hand, the degree of ‘dislike’ is in reverse order.”
Both are clear and grammatically correct!