Hello, i can see in the picture that there is fracture of tooth which is involving outer layer of the tooth that is enamel and also it might have involved the inner layers of the tooth, therefore if at all you leave it untreated, sensitivity of that tooth might start, therefore it is required to visit a dentist nearby and get the required treatment done.
Next Steps
visit a dentist
Health Tips
Do not bite anything hard from that particular broken tooth.