International student needs your help.

 Hi all, I am a international future undergrad.I

scored 22 composite, and 30 on math. also I got 80 on toefl(I met the minimum;I can do better but don’t want to spend more time on this). Currently I am applying 50-100 range, all STEM related programs. I will be 25 year old next fall, back I was in high school, I was a straight A. But my concern is should I sent my ACT to these schools which I currently lower than even 25th percentile but could prove my ability on math?I am willing to paid full tuition. Cheers