Welcome to Waze Editing, KennethSohHappy!
If you have just paved a road, you can start up the editor https://www.waze.com/editor/
and. in the left information pane, click on the tab that says "Drives"
You'll be able to zero in on your recent drive and quickly find the area that you paved.
Now, all you need to know is what to do with those newly-paved roads.
You will want to read about how to confirm your new road
, and then move on to the sections about how to make sure it is connected properly to the other roads, with the turns set correctly. You might need to fix up the shape/geometry of your new road a little bit.
Along the way, be sure to ask plenty of questions in chat.
And have a look through this to help you get oriented toward the best editing practices: https://wiki.waze.com/wiki/Waze_Map_Editor/Welcome