I don't fully understand what you want but I suggest you start at the beginning by fetching the data from the website. To do that you need first to understand how the data is available on the site. Is it in html or is it accessed via javascript, for example? Once you know what you need to do then you should be able to use an http request node to fetch it.
@vikozo as you might have realised, the values displayed are generated by javascript - meaning the HTML that you get from a HTTP Request contains none of the data you require.
If you can identify a URL to an API that is called you might be able to locate the values of interest.
Worst-case you can install WDIO nodes and navigate through the web UI which also executes JS & renders everything. You can use WDIO to extract information from the page that way.
Hello @Steve-Mcl
thanks a lot - it took me longer to have the same view then you haven - then after to get my datas!
Now some Node Red Magic - bat there will be other question.