Azure Migration

How to migrate from on premise to Azure? i have a JD mentioning that ? do they mean 0365? is there any video content available to refer

You should ask them what is being migrated from On Premise to the Cloud. Is it VMs, or containers? Databases? Could be anything.

they mentioned it is outlook mail to Azure. so do they mean 0365 here ?

Yes I would say Office 365 - though it has nothing to do with Public Azure Cloud.