Hey I was driving at school and hit a curb with the front right of my car no damage except a few days after I felt the brake make a rattle then the ABS light went on, a few weeks now and the light goes on every now and then and the brake will shutter. Do you think ill have to replace the brake and rotor or is it something else, sorry Im a bit of a noob with this.

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You could of some how damaged the wheel sensor or wires for it.
Take the wheel off and inspect it,see if there is anything visually wrong with the connector or wiring.

Hows your alignment ,no shaking or pulling at speed.