Is it bad if you peeled off a single freckle on your nose and will it grow back and if it will how can you prevent it?

If you peeled it off, it wasn't a freckle, it was a mole. Freckles are dark spots on your skin caused by sun damage and are not raised. Moles are small growths that are often dark in color. I don't think it will come back. I also don't recommend removing them yourself. You could cause permanent scarring. That's a job for a dermatologist.