US didn't achieve any of the goals it stated during any part of the war. The "goals" it achieved were largely a restoration of the status quo ante, modulo an enormous new revenue stream for Iran.

US spent vast amounts of money on not achieving any meaningful objective, while at the same time granting the opposition items from their long-term wish list (removal of sanctions). That's a loss.

If Iran's leaders' brains are not made of rotten oatmeal, they will massively accelerate their nuclear weapons program with their windfall.

Before today, only ships Iran deigned to let pass the Strait of Hormuz could go through without risking attack from Iran. As a result of the ceasefire, Iran must let any ship through the Strait... unless Iran objects to its passage.

There does not appear to be an actual meaningful change in the status of the Strait of Hormuz, which does not make it a win. Of course, there's a broader loss which is that the US is strategically in a much worse position than it was a month ago. Reopening the Strait with free passage of ships would be a return to status quo ante bellum, but the US can't even manage that... which means that it's a major loss for the US, quite possibly the worst strategic loss in its entire history.