While you cannot directly pull repeating section or table data through the Lookup field, you can use a simple calculation on your form to pull the data through instead.
To lookup repeating data:
- Add a Lookup field to your form and select the form that you want to pull the data from.
- Add a Calculation field. For your expression, use the names of your Lookup field and repeating section/table, followed by the .Select function and the name of the field inside the repeating section/table that you want to reference:
=Lookup.RepeatingSection.Select(Name) - Now, your Calculation field will display every name entered into the repeating section on the other form.
Learn more about referencing repeating data and creating data lookups.