Why does my ACT fluctuate so much?

So I’ve taken my ACT 3 times

•1st Freshmen year
-Composite-24
-English-26
-Mathematics-21
-Reading-23
-Science-25

•2nd Sophomore Year
-Composite-25
-English-26
-Mathematics-24
-Reading-26
-Science-22

•2nd Later Sophomore Year
-Composite-25
-English-22
-Mathematics-27
-Reading-26
-Science-26

The scores go up and down individually but the composite kind of stays the same.
What should I do to try and stop this?

You scored a 24. Then a 25. And then a 25.

Yeah I was talking about the subscores, the subscores fluctuate, like in English it was 26,26,22 Science went 25,22,26

Because it is a different test every time you take it…and you haven’t gained any actual additional knowledge in the intervening time. Why have you taken the ACT 3x and you aren’t even a junior yet?