This is 5 million for this particular court case. Nothing is preventing others from filing their own, very similar cases. If Meta ignores the court's decision, a second lawsuit may end much worse for them.
Though, practically speaking, America has been threatening to make the trade war they started much worse for the EU if it tried to enforce things like DSA and GDPR fines. We'll have to see how enforceable these laws really are.
The US wouldn't be doing this if these American tech companies weren't lobbying the government hard to kill the DSA & GDPR. It seems like all regulatory enforcement is out of the window with this administration, so if they can kill the European regulations, they're free to do as they like. The scoping of the trade war as the US having a deficit with all countries by not counting services is ridiculous, it's the most important sector of the economy, and the US has a massive surplus in services.
Ding ding ding! If the EU had even the tiniest of balls, they would've accepted the US tariffs with open arms while applying equivalent ones on services at the same time. Glazing Trump during the announcement about how great of an idea it is to institute these things, how much fairer they make it.
Though, practically speaking, America has been threatening to make the trade war they started much worse for the EU if it tried to enforce things like DSA and GDPR fines. We'll have to see how enforceable these laws really are.