The bombing operation up their enrichment capability. They still have scientists, engineers, and the IRGC has the country as a hostage at this point. This does, technically, keep them from making 'the bomb.'
BUT: they can still make missiles, and they still are making missiles. Missiles are the real problem, they could theoretically make a 'dirty bomb' which has lots of radioactive material that doesn't necessarily make it a 'nuclear bomb' but a bomb that disperses lots of highly radioactive material. They are not the best missiles but they can fly pretty far and its expensive and high risk to intercept them. Russia is sharing missile technology with them, China is actively supplying their military. If they're making spaceflight capable rockets to launch satellites, those are ICBMs by another name. What they can yeet into low orbit can fall down to a point of their choosing. That's what ICBMs are and do and why the technology progressed in lockstep with the space race in the 60s.
They still have nuclear material since the strike's focus on stopping enrichment and the obvious buildup to it prompted the IRGC to move the existing enriched material, which is not enriched enough to make a bomb, but is enriched enough to be a real problem.
They could be potentially rebuilding the centrifuges which enrich the uranium. Even if they aren't/can't, they've got a lot of "we can make this into a bomb quick" material, allies in Russia or China who could and maybe would enrich it and it would be hard to stop or detect.