Waterproofing basements is expensive and very hard work. Is it seeping through the block or is it coming through a door entrance?
It’s coming up from underneath.
Was your sump pump overwhelmed too quickly to move precious items? Or no sump pump at all? https://jenkinsrestorations.com/the-basics-and-the-benefits-of-a-sump-pump Really sorry to hear about this. Thanks for everything you do.