The Current Date/Time is a special value that records the exact date and time. It can be used in custom actions, forms and add/edit screens.
After adding the Current Date/Time special value, link it to the column where you want to record your data.
Date/Time Column Formatting
You can set up your target column as a Date/Time column in order to set your preferred date/time format. Otherwise, you'll have a record that looks like this: "2020-04-01T11:00:21.496Z"
To learn more about using special values, read our guide here.