Got a endscopy next week and was very nervous about being put to sleep is it dangerous or no ?

Always carries small risk. Discuss your case with the Drs who will be giving it. They will know risks in people like you. You did not mention your ethnicity or you family history of anesthetic problems.

Sedation is not unusual with endoscopy and it is very rare to have complications. But everyone is different and your specifics should be discussed with your doctor. This public education site cannot provide specific personal advice in the absence of full medical historical details.