I can flip it to the other side, but I'm wondering if there's anything I could do to refurbish it. Is there any way I could sand it to fix it or something?
I have several like that - don't worry about it.
As to sanding, think plastic is too soft to sand properly.
Use a nail brush when washing. Go left to right, right to left, up to down, down to up. Not going to get any cleaner than that.
I can flip it to the other side, but I'm wondering if there's anything I could do to refurbish it. Is there any way I could sand it to fix it or something?
Be careful with plastic cutting boards. When they get rough, flip them. When both sides are rough, replace them. They are a source of microplastics in the body. Those are more and more considered to be not good for us.
I use plastic cutting boards, but at some point, I toss them or move them to the garage for use there, and get new ones for the kitchen. The ones I buy seem to hold up better than the one in your photo. I get them from IKEA in a multi-pack, so they are not expensive cutting boards.