Are you planning to install this on a or are you using an emulator like Ryujinx or Yuzu?
To use this file on a Nintendo Switch, your console must have custom firmware (CFW). There are two primary ways to install it: Connect your Switch's microSD card to your computer.
Copy the extracted .nsp file into a folder on the SD card (e.g., a folder named install ).
How to Install NSP Files from SD card to the Nintendo Switch using Tinfoil!!!