So the link you are looking to extract would be coming through in an array of objects inside the
_wc_shipment_tracking_items field of your item? I couldn’t see this value in your video. Would you be able to share an example data set which contains the link you are looking to extract?
When posting code like your example item, please wrap it in a preformatted block either by using this button or by manually putting three backticks ``` above and below your code. This will prevent the forum from applying formatting.
On a general note it would be great if you could also write down the questions you have so future users will be able to search for them. Video content wouldn’t searchable unfortunately.