In your opinion, which subject tests are the easiest to get a 800 on and which are the hardest. Rank them please!
Literature
U.S. History
World History
Mathematics Level 1
Mathematics Level 2
Biology E/M
Chemistry
Physics
Spanish
I am thinking of doing U.S History and World History. I am strong in all these subjects but i don’t like Math/Science so i think it would be harder to study a subject that i don’t enjoy in the first place. But i still want to here people’s opinions who have already taken some of these or have some tips and advice. Thanks! 
It really depends on you. My kids were big readers, so Lit was easy for them. Note that you don’t necessarily have to be exposed to specific works of Literature to do well in the test, too. It is set up with the assumption that everyone can’t have read the same works.
Don’t take Math I. I don’t know why they even offer it…
If you are a native Spanish speaker, don’t take that one. Colleges consider that a cop out.
My kids had trouble with Bio. Maybe because so many students take it?
Maybe try one of the history ones and Lit if you are strong in CR. I know World History used to offered only on some SAT dates, so watch for that.
Not sure why you are asking us this. You can look up the grade distributions yourself, and you know better than we do what your strengths and weaknesses are, and which subjects you’ve done the most relevant coursework in. Keep in mind the testing population is not necessarily the same–math level 2 has a lot of 800s but the weaker students are taking level 1 and level 1 scores are lower.
Looking at the percentiles may give you some indication:
https://secure-media.collegeboard.org/digitalServices/pdf/sat/sat-percentile-ranks-subject-tests-2015.pdf
The quality and thoroughness of the teaching varies at each school for the different subjects, so asking kids at your own school which subject tests they did best on and which teacher and course prepared them may be more useful. Also, taking practice tests will give you an idea of what your scores will be.