How to click on a list item and open a floating pdf

I have a list, I need to click on an item and open a pdf relating to this item, I use the spreadsheet as a base, and the pdf on Google Drive. I would like to open this pdf in floating mode because it is not big, it is a pdf image.

Can you show some of your blocks and what you have done so far?

I was able to open it on a screen through the webview, but I would like to click on the item in the list and open a floating image of the PDF,

Uploading: pdf.png……Não carrega a imagem