There is no way that an amount of storage can be transferred elsewhere. It is not possible. The storage is physically inside the phone. It is not just data. It is hardware.
The phone may have come with 32GB total, however you will never have access to all that space. The things installed by the manufacturer take up space before you even get the phone. The OS (operating system) a.k.a. Android. The preinstalled apps and anything else the manufacturer put on it. So the total space is not the same as the total available space.
To know what is being used by what you need to go into "Settings" and then "Storage". It will give you a breakdown for all the space on the device, and what is using it, as well as the info on any installed SD cards...