Hi,
Below Qualtrics support page will guide you through the integration step. Passing data from Qualtrics to ServiceNow.
ServiceNow Task

If i understand it creates a ticket in servicenow.
My questions are:
It possible if I close that ticket in service now to have feedback in Qualtrics? Or is just one way information.
It is possible if I have a ticket in qualtrics, send information to open a ticket in servicenow?

https://community.qualtrics.com/XMcommunity/discussion/comment/53073#Comment_53073The service task is OOTB but if you need it in reverse follow the below support page:
You need to include json event
JSON EventHope it helps!