Start the Snapchat app and tap your account icon at the top left. Tap the Settings icon (shaped like a gear) at the top right, and then tap Notifications. Choose the notifications you want to receive (check the appropriate boxes or swipe the buttons to the right, depending on what kind of phone you use).
If you are looking for how to get notifications on snapchat then you must check out the given reference guide below to know more.
If notifications are enabled on Snapchat but you’re still not getting app notifications, make sure that Do Not Disturb is turned off. Battery Saver Mode is another common culprit for notification issues.
How do I turn off Snapchat notifications for one person?
To silence notifications from a Snapchat user, open their contact page and tap the three dots > Message Notifications > Silent.