dl

const quiz = document.querySelectorAll('.quiz.modtype_quiz .activityinstance .instancename')
for (const q of quiz) {
    const rawText = q.innerText
    const text = rawText.substr(0, rawText.length - 5)

    const aElement = q.parentElement
    const link = aElement.href

    const button = document.createElement('button')
    button.innerText = 'Copy'
    button.onclick = () => {
        navigator.clipboard.writeText(text)
        window.open(link)
    }

    aElement.parentElement.after(button)
}