A 1957 nickel is worth face value only, unless it's uncirculated or a proof coin.
5 cents.
It's the usual practice of this site to answer a single question at a time. Please see:"What is the value of a 1940 US nickel?""What is the value of a 1942 US nickel?""What is the value of a 1944 US nickel?"
$100,000,000,000 because such a coin doesn't exist. Silver was only used in US nickels from 1942-1945 on coins with a large mintmark over the Monticello. A 1957 nickel is a common coin, worth a dollar or so if completely uncirculated but only really 5 cents if circulated.
It is necessary to know the amount of wear and mint mark (if it has one) to be able to make an estimate of value. I would suggest you take your coin to a reliable dealer and have it appraised.
As of 16 Feb 2018, the melt value of one US nickel is 4.4 cents.
This design is called either a buffalo nickel or an Indian head nickel; both names are about equally common. Please see the question "What is the value of a 1919 US nickel?" for more information.
In average condition either coin is worth face value only. If it's an uncirculated or a proof coin in its original packaging, it might be worth 50 cents or so.
The US nickel was first issued in 1866. Please double-check your coin.
5 cents.
In average condition, both coins are only worth their face value.
Priceless. Indian Head nickels were only made from 1913 to 1938.
Average current retail value is $5.00