I'm failing foundation maths

Bro idek know what to do. Im homeschooled so I have no teachers and no help. I'm an A student in humanities and English but for maths I just can't get to a 5.

My college said I needed that to get in and I don't want to resit. I keep on getting 63 out of 100 when I would need at least 75 to get a 5 on the past papers I'm doing. I've done so many papers and so much revision but idk what to do. My exams on Thursday and with the way the grade boundaries are increasing i'd need to get an 80

How do i get those extra points in a few days?