Add a loop function to existing script

Hi devs, I'm just at the beginnings of coding and I'm still learning thru courses, however I need to update my script with loop thru objects function which is I believe a 5 minute job for advanced NodeJS developer. What I need to do is get sizes in array which I scraped and post it to webhook, everything is already done but I'm just kinda lost in how to return the object from array to correct format. Picture of the result is attached down below. Here's the script I need to edit: [login to view URL]