Here are the standard ranges from Mayo Clinic https://www.mayocliniclabs.com/test-catalog/overview/83175#Clinical-and-Interpretive

In general, you want lower numbers like 150 to 400. They can be much lower while on most osteoporosis drugs (except Tymlos and Forteo).

Females
< 5 years: 347-1508 pg/mL
5-9 years: 383-1556 pg/mL
10-15 years: 311-1776 pg/mL
16-17 years: 146-1266 pg/mL
18-29 years: 148-967 pg/mL
30-39 years: 150-635 pg/mL
40-49 years: 131-670 pg/mL
50-59 years: 183-1060 pg/mL
60-69 years: 171-970 pg/mL
> or =70 years: 152-858 pg/mL
Premenopausal: 136-689 pg/mL
Postmenopausal: 177-1015 pg/mL