We won't know the extent of the damage or aftermath for some time I imagine. But as far as the Fordow site is concerned, it is a uranium enrichment facility.
The IAEA found evidence of highly enrichment uranium at the site, but a majority of the uranium stored is probably in the uranium hexafloride (UF6) form.
UF6 is a heavy uranium gas that is used in centrifuges. The heaviness of the gas means that if there was a release, it likely would only have localized impacts.
