See page 3 of the manual for wiring diagram.  Page 7 shows the spindle setup including setting the PWM base frequency.

Ok but what connect from bob and where to vfd? How to know this

I mean which pins must be connected for both side

You'll just have to read the manuals.  It isn't hard.

What I'm asking is not in the manual, and I can't find a query to connect these two things.
If anyone knows, please help me

Ok but what connect from bob and where to vfd? How to know this

I mean which pins must be connected for both side

If you are using the 5-Axis BOB, jumper for relay must be shorted. Relay is controlleed by Pin 17. Relay Closed when P17 is active.
Relay output connect to FOR and DCM of VFD (TOP ROW in picture)

0-10V output connect to VI of VFD and Analog Ground to ACM. (Bottom ROW in picture). Activated by Pin 1

You need a small 0.1uF capacitor between VI and ACM. Also the two wires must pass thru a ferrite core.

Set the VFD control function to external analog input.

Confirm Mach3 configurations