TOEFL score
American universities have very different language requirements. If they meet the requirements, they can directly enter the undergraduate course. Of course, different schools have different requirements for the examination results. If you don't have TOEFL scores, you can enter the language training class of the university first (there is no preparatory class for studying in the United States), and then start formal undergraduate study after passing the school language test.
SAT or ACT scores
Many American universities take students' SAT scores as a reference for admission, especially those who want to apply for top American universities. SAT or ACT test scores are a good reference, so it is recommended to prepare in advance.
GPA score
The admission standards and admission rates of American universities and colleges vary greatly, generally speaking, as long as the GPA is above 70 within three years.
Recommendation letters
Letters of recommendation from the principal of high school and another teacher or senior are materials to introduce students' comprehensive situation and comprehensive ability.