Can we put adsense code on a form?

Im basically making a thank you page after people sign up and want the ability to put adsense on the jotform thank you page

Unfortunately it is not possible to add script codes to the default Thank You page, so you cannot put adsense code there. A possible workaround would be to create your own custom Thank You page where you can put the AdSense code. Then simply redirect the form to that custom Thank You page after submission. Please follow this guide on Redirecting Users to a Different Page.
Regards.