To subscribe to your calendar in Lime Go in Outlook Calendar you need a "subscription address URL" from Lime Go.
You'll get this "subscription address URL" if you press on your profile picture and "Calendar settings" displayed under your username.
In the Calendar settings you'll find a link named "generate subscription address". Press the link to generate an URL then copy the address URL generated for you and open up your Outlook calendar.
In Outlook, choose open calendar in the toolfield and paste the adress. Voilá! Now you have your Lime Go calendar synced into your Outlook calendar.
Note that you can not change the Outlook calendar and expect those changes to transfer to Lime Go. As it is just a reflection of your Lime Go calendar that you see.