To achieve a 90% score in junior high school English, you need to focus on several key areas:

1. Master the basics: Make sure you understand and can use the English language's basic grammar, vocabulary, and pronunciation rules. Practice regularly by reading aloud, writing sentences, and studying with flashcards.

3. Enhance your listening skills: Listen to English audio materials, such as podcasts, songs, or movies with subtitles. This will help you pick up new words and phrases and improve your understanding of spoken English.

4. Write often: Practice writing essays, summaries, or even diary entries in English. This will help you express yourself clearly and improve your grammar and vocabulary skills.

6. Get feedback: Ask your teacher or a native English speaker to review your work and provide feedback. They can help you identify areas where you need improvement and offer suggestions for improvement.

7. Keep practicing: The more you practice, the better you'll get. Set aside time every day to study and use English, and don't be afraid to make mistakes—they're part of the learning process!

By focusing on these areas and working hard, you can achieve a 90% score in junior high school English. Remember, consistency and dedication are key to success.