I have purchased ArcGIS Pro for personal use but I have spent more than 10 days, countless hours trying to figure out how to activate your product. This is outrageous. Why can't it be more intuitive? Really?
If you don't want to go the Tech Support route, perhaps you could provide some background on what you have tried and what has failed.
In the interim, I will flag
Nixon,
Start with the following documentation. This will get you started. Just let me know if you run into any issue following the documentation or have any additional question.
Set up an ArcGIS Online organization—ArcGIS Pro | Documentation