I have a warranty. My iPhone screen cracked wouldn’t I be able to go get it repaired because I have a 1 year warranty

Fixed sure, under warranty no.

It would need to fall under manufacturing defect for it to be under warranty, if your screen cracked to due an accident that wouldn't be under warranty.

Warranty covers manufacturing defects. Accidental damage is not covered under warranty.

You can get it fixed, but it won't be under warranty. You will have to pay for the repair.

Correct.