This article explains how to transfer Nintendo Switch save data and user data from one Switch to another using the Switch’s built-in NFC capabilities, a microSD card, or via the cloud. Instructions apply to Nintendo Switch and Nintendo Switch Lite.
Nintendo Switch: How to Transfer Your User and Save Data
To transfer save data between two Nintendo Switch systems, both systems must be connected to the internet and in close proximity to each other:
From the source console home screen, select System Settings.
Select Data Management > Transfer your saved data.