Tags field: value uuid

We have a files blueprint with a tags field which gets tags options from the children of data-tags.

 fields:
          tags:
            type: tags
            accept: options
            options:
              type: query
              query: kirby.page("data-tags").childrenAndDrafts
              text: "{{ page.title }}"
              value: "{{ page.uuid }}"

This store the page.uuid example:

Tags: page://6FCi7U2H8h41PV7D, page://93ixticzxzv1PB4d

In the panel, we have a page documents, where we have section files with layout table.
Question1: How can we display the data-tags child title in stead of the data-tags- child page uuid?
We have the column below:

  tags:
        label: Tags
        value: "{{ file.tags }}"

Documents:

Question 2:
In the Data-tags page we also have a section of pages with the table layout.
How can we display the count of document for each tags:

We have the column below:

  documents:
    label: Documents
    value: "{{ site.find('documents').files.filterBy('tags',$page->uuid(), ',').count }}"