I wrote a web app using ASP.NET Core web app targeting .NET Core 2. I didn't realize GoDaddy does not support ASP.NET Core, but only ASP.NET Framework 4.x.
What are the steps I need to follow to migrate to support ASP.NET Framework?
Clear step-by-step explanation would be helpful.
Given you have built the app, source a hosting provider that will host it, eg Microsoft Azure. The app is built using a modern technology there is no need to rebuilt it something else (arguably less modern) and the cost of re-building it will outweigh the hosting costs, ie you can host today and continue development.