Script can export netflix thumbs-ratings as json when pasted in a browser console on the https://www.netflix.com/viewingactivity tab.

export-netflix-rating.js

console.log(JSON.stringify(Array.from(document.querySelectorAll('.retableRow')).map(node => {
    let rating
    const up1 = node.querySelectorAll('[data-name="RateUpFill"]')
    const up2 = node.querySelectorAll('[data-name="RateTwoThumbsFill"]')
    // const down = node.querySelectorAll('[data-name="RateDownFill"]')

    if (up1.length) {
        rating = 1
    } else {
        if (up2.length) {
            rating = 2 
        } else { 
            rating = -1 
        }
    }
    const linkNode = node.querySelector('.title a')
    const textDateSplit = node.querySelector('.date').textContent.split('.')
    const day = textDateSplit[0]
    const month = textDateSplit[1]
    const year = textDateSplit[2]
    const date = new Date('20' + year, month - 1, day, 0, 0, 0, 0)
    return {
        date: date,
        title: linkNode.textContent,
        link: linkNode.href,
        rating,
    }
})))

date splitting and the split indices may have to be aligned with your local date format.