How to display an array in xml?

Question

Magento

Good day.
I have a collection, the number of items in it is not known in advance.
There is a user_user_form.xml form,
how can I make a fieldset so that the number of fields depends on the size of the collection?
by itself it will be necessary to transfer it through DataProvider
p.s.
dynamic_rows_container suits us, but the problem is that fields are initially inputs
and for some reason it doesn’t work to make them text :[