Hi @ AVH,
Thank you for posting.
What is format of “Due Data” in your column?
You could add a “Compose” action and take a try to use expression below:
Expression:
formatDateTime(utcNow(),'yyyy-MM-dd')
Use this Expression would return a data like 2018-01-24
Image reference:


More details about the Workflow Definition Language, please check the link below:
https://docs.microsoft.com/en-us/azure/logic-apps/logic-apps-workflow-definition-language
I have a sharepoint list and the list have a Date type due data field.

I have made a flow to compare the due data with the date now. please refer to screenshots below:

The expression of first value as below:
formatDateTime(triggerBody()?['duedate'],'yyyy-MM-dd')
The expression of second value as below:
formatDateTime(utcNow(), 'yyyy-MM-dd')
The “Condition ” is used to compare the due data with the date now. The due data and the date now could be format to a same type.
When an item is create,the flow run successfully as below:

I hope my clarification has been helpful.
Please feel free to contact us if you have any other questions.
Regards,
Alice Zhang