Is there any way that you can spend another year in high school? If you’re not too old for it, it would be free, and a lower pressure way for you to get in another year of free schooling while you are mastering English. Speak with the school about it now.
If this is absolutely not an option, then plan for going to community college right after high school. Choose one that has a transfer agreement with a good public 4 yr college, preferably your state’s flagship state U. That way, you’ll have a guaranteed acceptance as long as you maintain a decent GPA, which is very possible to do at a community college.
You really don’t need to bother with the SAT or ACT. Even if you were planning to apply to colleges this year, most schools have gone test-optional, so they would look at your grades from your school outside the US and for last semester.