how can i use shortcode as a link inside image in wordpress

Hi chhavi,
sorry but I do not understand your question. My best guess is that you want an image to be clickable and direct users to a quiz?

If so, you’d want to do the following.

1. Create a new page and add the quiz shortcode to it to show the quiz.
2. On the page with your image, select it and make it a link to the page you created in step 1.