If we managed to hatch our dinosaur, we would then have the monumental task of keeping it alive - it would be entering a world full of germs and other dangers to which it had no resistance. Our world is empty of the food and environment that dinosaurs were used to. Even on a tropical island, dinosaurs would sicken and die eventually. Our world has changed a lot in 65 million years. The only way we can see Velociraptor , then, is to watch the movie or read the book.
Extinction is forever.
Once a species goes completely extinct, we have little or no chance of bringing it back.