AP Macroeconomics and AP Microeconomics

Also, I’m currently in my junior year and I only signed up for Macroeconomics this May. Can I take them on my senior year (May) and still be able to submit the scores and will these scores be counted as credits?

I’m self-studying Macroeconomics using
-EDx
-CliffsAP Economics (micro & macro)
-Krugman’s Economics for AP
-Success in Economics
-Youtube videos and the internet

Do you guys have any tips or advice when it comes to studying for macroeconomics?

I’d also suggest Crash Course and Albert.io for practice questions if you can afford a subscription for Macro. Check that you have covered everything in the collegeboard outline. Take several past exams and review the material that you get wrong. At most schools, scores of 4 or 5 will be counted for credit even if you didn’t take the course in high school.