The semantics in this thread is confusing. Instead of talking "voltage" everywhere, let's talk about electric potential (V) (measured in volts or joules per coulomb) and potential difference (deltaV).
For a current to flow from point A to point B, there must be a potentil difference between the 2 points and a pathway for the chargs to flow. The pathway could be a light bulb and wires connected between A and B
Although I hate to do it, let's talk about the flow of positive charge in the following example:
Let's say the potentail at A is +20V and the potential at B is 0V. (This means that point B could be grounded). Hence the potential difference (deltaV) between the points A and B is -20V.
If 1 coulomb of (+) charge (Q) flows from A to B, the energy dissipated (deltaE) by the charge will be 20 joules.
{deltaE= QxdeltaV}
The light bulb will release most of this energy as heat because of its resistance, BUT the connecting wires also have a little resistance, so they will each dissipate a small amount of heat energy as well.
So, between A and B, we have wire1...lamp...wire2.
Yoiur voltmeter might show the following maesurements: across the ends of wire1, 0.1 volt, across the lamp,19.7 volts.and across wire2, 0.2 volt.
As an exercise, if the current flow through the circuit is 2 amperes, calculate the reistance of each of the parts of the circuit using Ohms Law.