You can select any logic element in the Netlist view or Schematic and open the instantiation of that object in the RTL source file it is instantiated in. You can also open the definition of the logic in the RTL file it is defined in.
To open the instantiation or definition of any selected logic in the RTL source file, select the object and select Go To Source or Go to Definition from the right-click menu. The Vivado IDE opens the appropriate source file with the specific instance highlighted.