Explanation
To create a task on Contact and Lead records for follow up when someone has not opened five emails in a row, a scheduled automation can be used to run a SQL query activity that selects thesubscribers who meet this criteria from the _Open data view and inserts them into a data extension. The data extension can then be used as an entry source for ajourney that has a task activity to create the task in Sales Cloud. References:
https://help.salesforce.com/s/articleView?id=sf.mc_as_data_view_open.htm&type=5https://help.salesforce.com/