FOR WSL2

wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add -
sudo apt-get install gnupg
wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add -
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.2.list

sudo apt-get update
sudo apt-get install -y mongodb-org

sudo nano /etc/init.d/mongod
paste this content in the file 'https://raw.githubusercontent.com/mongodb/mongo/master/debian/init.d'

#give permissions
sudo chmod +x /etc/init.d/mongod

#start the service
sudo service mongod start