where is the odometer?

The only way would be if u have records of when repairs were done and they recorded the mileage.

Shouldn't the mileage be shown on the title transfer you signed when you purchased the vehicle? Take that number and subtract it from the current mileage and you have the mileage you have driven since you bought it.

Unless you bought it new you can't know the total miles unless you have paperwork giving the miles when you bought it used.