How to fetch and get response header with no cors?

Question

I try to fetch file hosting with browser. i disable cors web security with extension https://chrome.google.com/webstore/detail/allow-cors-access-control/lhobafahddgcelffkeicbaginigeejlf?hl=en. i tested. fetch return the html. but the problem i dont get the response headers. like cookie. it just give me 4 key. i need that response header cookie to do next fetch.

const initHeader = new Headers()
initHeader.append('accept', '*/*')
initHeader.append('connection', 'keep-alive')
initHeader.append('user-agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36')
fetch('https://www56.zippyshare.com/v/d0M2gx7X/file.html', {
    method: 'GET',
    headers: initHeader
}).then(function(res) {
    res.headers.forEach((val, key) => {
        console.log(key + ': ' + val)
    })
})