My son got poke inside he eye with a stick at school and he has like a little bubble and it's like red and goes down like a vein. Not sure it's inside?

Needs evaluation. A stick poked in the eye could penetrate the eye and that would need immediate treatment. If next to the eye and a portion of the stick broke off in the deeper tissues, that would also require intervention. Do you still have the stick and is it intact? Best to have an ophthalmologist check your child.