We could! The technology for cloning does exist. It’s just about recovering sufficient, viable tissue to use. Unfortunately cells and tissue cannot stay alive for millions of years so we don’t have anything to work with. Fossils are hard and don’t contain any tissue. Shame.
Because unlike in Jurassic park we haven’t found a sample of DNA complete enough to be able to do the cloning. Though if we did find such a sample I think we could notionally be able to do it with the technology we have, we’d have to be careful about which animals we used as surrogate mothers for any cloned dinosaur.
Cloning hasn’t got to this sci-fi level yet, but it probably could. problem is, the scientists in jurassic park used frog DNA to repair the sample they had from the mosquito. The resulting ‘dinosaur’ would therefore be a little bit ‘frog’.