Best thing to clean a burnt pot?

Hey team, my roommate cooked rice and burnt it 🤧 and then left the pot off to the side while I was on vacation for 3 weeks. It now looks like this, and I’ve been scrubbing it for the last 20 minutes or so. Does anyone know what would clean this the best or should I just give up on my pot!?

Hey team, my roommate cooked rice and burnt it 🤧 and then left the pot off to the side while I was on vacation for 3 weeks. It now looks like this, and I’ve been scrubbing it for the last 20 minutes or so. Does anyone know what would clean this the best or should I just give up on my pot!?