At minimum you would be looking at "nothing". Between that and 2%/10 million there are many possibilities. Requiring to answer questions, warnings, requiring some changes etc. And even once it gets to the fine territory, getting things from the max end is not something that would always happen. Out of documented 208 cases (https://www.enforcementtracker.com/), there have been 6 fines that exceeded 10 million and another 4 that exceeded 1 million. Median seems to be around 10 000.

No lawyer either and I don't know how to parse the legalese of the actual text [0]: "Infringements of the following provisions shall [...] be subject to administrative fines up to 10 000 000 EUR, or in the case of an undertaking, up to 2 % of the total worldwide annual turnover of the preceding financial year, whichever is higher:" but reading that as a generic "max(10 million, 2% worldwide annual revenue)" seems unlikely to be correct - especially given all the "up to"s in the sentence.

[0] https://gdpr-info.eu/art-83-gdpr/ Art. 83(4)