Direct Net route in PCB EDITOR

suppose i want to direct design pcb in PCB EDITOR . After place all footprint how can i connect net with them & after connect , i will draw track as per net ,& net but be highlights while making track

Start by reading the section Starting from scratch:

You will have to assign nets to pads manually since there is no schematic to assign them. Read the section Working with pads:

with the note:

While you can manually assign nets to pads in the PCB editor, this is not a typical workflow. Usually net-to-pad connections are defined by the schematic and then transferred to the PCB editor.

As noted, this is not a typical workflow.

yes sir. Thanks for guidelines. In some small case there is no need to draw sch so . very few component but it almost ok with answer

Even in very small cases it is usually easier and quicker to draw the schematic first rather than go to the trouble of manually assigning nets to the PCB.

And if you want revise the circuit you have to edit the net assignments, and except for very simple circuits, almost certain to cause mistakes. With a schematic, the nets are assigned by KiCad as a matter of course. So skipping the schematic is false economy.