The most important fine so far is against Google (50 million EUR - for France only, not for the whole of the EU territory). [CNIL info in English here](https://www.cnil.fr/en/council-state-confirms-sanction-impos...) [Latest decision June 2020, here](https://www.conseil-etat.fr/ressources/decisions-contentieus...)
The UK data protection authority (ICO) has also announced huge fines against British Airways and Marriott - but these fines are not in effect yet - unsure how high they will be exactly if any.