The results of an open survey is displayed "live" in Results> Individual questions, Results > KPI and Results> Response rate.
However, the final results for the Dashboard, Heatmap and Segment views will not be available until Monday morning, the week after the survey closes for answers.
The reason for this is that on Sunday evenings the system checks all groups and generates results for groups that "pass" all anonymity checks and creates a kind of "snapshot" of the final result. The snapshot of the result is then available in Dashboard, Heatmap and Segment on Monday morning after the system has checked all groups.
This also applies to the export of the result.