So imagine you have two big water buckets, one on the ground and one up on a table. You want to pour water from the high bucket into the low bucket. But there's a problem - the water can't just jump from the high bucket to the low bucket!
That's basically what happens with electricity, too. There needs to be a way for the electricity to flow from a higher point to a lower point. This is called voltage (sometimes called electric potential).
Volta potential is a fancy way of talking about the difference in voltage between two points. Just like water wants to flow from a high bucket to a low bucket, electricity wants to flow from a place with higher voltage to a place with lower voltage.
So let's say you have a battery with a voltage of 1.5 volts. That means there's a difference in voltage of 1.5 volts between the positive and negative ends of the battery. That difference in voltage is the volta potential.
Overall, volta potential is just a way of measuring the difference in voltage between two points. And just like with water, electricity flows from the higher voltage point to the lower voltage point.