How long is recovery for fractured spine and a cracked skull?

Depends. The bones take about 12 weeks to heal enough to take normal loads, though "minor" injuries may not need much protection. If there is injury to the nearby soft tissues (brain, spinal cord, nerves, blood vessels, ligaments, disks, muscles) the recovery could be more complex and lengthy. The severity of the bone injury also impacts recovery.

Related Questions

I suffered a bad fall from an mva 2 days ago and got four stitches. I was diagnosed with a basal skull fracture, but thescan showed no other injury to neck or spine. I have somenausea and headache. What would be the recovery time?

A few weeks. The wound should heal within just 2 - 3 weeks. The skull fracture should largely heal within 4 - 8 weeks, depending on each individual's health condition. Most of the pain from the fracture should resolve within just 2 - 3 weeks. Mvas can cause associated soft tissue injury that can take longer to treat/heal.
Hopefully rapid. You are in the early days of your injury, but if all is otherwise fine, suspect you will feel far better if not fully recovered in about 6-8 weeks.
1 week to 1 month. Most recover between one week and one month unless there are complications (infection, meningitis, delayed brain hemorrhage). Headaches from this can last more than a year.

Fractured or cracked skull fatal?

Not usually. View the skull like a motorcycle helmet. With trauma, you want protection, and if the helmet breaks, it is likely that the head will not. The skull protects the brain, and usually fractures are like the helmet, i.e., the brain is safe. However, some skull fractures are in bad places, and result in hemorrhages (middle meningeal artery). Few head injuries are fatal, but many cause brain trauma.

I have a small crack in my right periatel bone with CSF leak. Size of crack = 4x1 to 5x5 mm. This is from a childhood skull fracture after a backward?

Neurosurgeon. Certainly would want to discuss directly with a neurosurgeon who would have the benefit of a direct exam and to be able to review your cr scan. Ultimately would have to weigh the risks and benefits of surgical verses nonsurgical care.