Applying for spring 2024

I am consider to apply for spring 2024 and in the meantime, I will take the act and improve my english, especially writing. I studied act before but I didn’t take it and today I did an practise test in reading part, which is the hardest part for me, it came out 32 out of 40 questions, even though I did quite well it still can be better so a little bit instruction would be fantastic.
My english is need to be more academic and my usages of punctuation is not the best and even I try to write as much as I can I think its not working somehow. And this issue reflect on my english score in act, therefore it is effect my act score as well.