xzarida:
Can I use the minimal circuit to do the bootloader arduinos minimal circuit ?

Yes.

xzarida:
How do I hook up the arduino ISP ?

Make these connections:

Arduino as ISP | ATmega328PB (physical pin #)

MISO | 16 (MISO)
MOSI | 15 (MOSI)
SCK | 17 (SCK)
10 | 29 (RESET)

xzarida:
Also for the atmega328pb-u the smd package only has 32 pins i though.

Correct. Is there something that makes you doubt this?

xzarida:
The dot is the 32pin on top of it and to the left of it is the 1st pin ?

Correct.