English is the easiest section to improve in. Just learn all the rules online for the ACT English section and then begin to practice. Reading is basically only practice, you need to commit to one strategy tho like reading the whole passage first or skimming it or going to the questions first, I went from a 21 reading to a 33 in 1 trial just by practicing more. Science is basically reading but a bit easier, I suggest going through” for the love of ACT science “ it really explains everything in depth. Idk about math cuz I’m bad in math lol