The vaccines were not without risk. Anyone seeing the data understood that, which is why the safety and efficacy were such divisive topics -- to the point where anyone questioning the establishment viewpoint was censored on most platforms.
The one big benefit the vaccine offered was it got the emergency orders lifted, businesses to reopen and schools to start using the classrooms again. The vaccine helped end the lockdowns, even after the reports that vaccinated people were still contracting it.
In a big picture analysis, I think Trump has a right to point to the vaccine development as an accomplishment. We were going to have a vaccine at some point no matter what. Trump's Operation Warp Speed enabled the developers to roll it out faster than any other vaccine is US history. That in turn halted the lockdowns sooner.
So, regardless of the individual side effects, the measurable impact of Warp Speed on the economy and workers needing to earn a paycheck was an amazing feat.
Some have the opinion that the lockdowns did more harm to the nation and individuals, in particular students, than the virus did. Whether or not the individual costs of the vaccine exceed the benefits to the nation as a whole is up for debate and may only be known decades from now.