Move or Drag or Grab.
Hover mouse over track then use hot keys M or D or G.
You will find a list of hot keys under Preferences / Preferences / Hotkeys.
There is heaps of information both in the Kicad Manual and in the FAQ at the top of this page.
And don’t forget the search icon in the shape of a magnifying glass at the top of this forum, adjacent to the FAQs: very useful to find if the question has been asked previously.