Depends on the depth of the pool
To fill it the pool to a depth of three feet would require about 1,770 gallons of water.
I can calculate how much water it will take to fill the pool but not the cost. The cost has to be determined by how much you pay for water where you live. The volume of the 24ft round pool x 5ft deep pool (assuming the dimensions given are inside dimensions) is 2,261.952 cu ft and will hold 16,921.662 gallons of water.
To calculate the volume of a swimming pool go to the link below.
About 4,640 gallons.
If it is 4 feet deep, then 13,500 gallons
To fill in this size pool you'll need 100.5 cubic yards of material. If you mean how many gallons of water to fill the pool, you'd need 20,300 gallons of water to fully fill it.
The volume of the pool is 1385.45 cu ft for a maximum capacity of 10,364.5 gallons of water.
This pool can hold a maximum of 9,400 gallons of water.
Depends on the depth of the water. If you go to four feet deep the total would be about 13,594 gallons.