Hi Shiraz19,
It sounds like you can't update all apps in the App Store, you have to manually enter in your Apple ID password to update them individually. We've got your back!
Try signing in on the Apple ID website: Manage your Apple ID
Go to Settings > [Account] > Media & Purchases and sign in.
Do you happen to have another Apple ID? If so, could these apps have been downloaded using that other account? This could prevent your apps from updating altogether, since they were downloaded using another account.
Hoping that gets you moving in the right direction. If not, let us know if you only use one Apple ID and if you are signed in successfully to Settings > [Account] > Media & Purchases? What is the error you receive exactly when you attempt to update them all?
Wishing you the best, take care!