For each coin you need to know its date, mint mark, and condition. With 200 or more date and mint mark combinations, that's far too large a range for a straightforward answer. This site has valuations for nearly all possibilities; look for questions in the form "What is the value of a <date> US nickel?" for specific numbers.
To get a general idea of values first, there are some general categories but there's a lot of exceptions as well. The most important dates to know are:
All Nickels, Quarters, Half Dollars and Dollar US coins dated 1900 have the motto E PLURIBUS UNUM on them, a denomination is needed.
Please check your coin again and post a new, separate question. The Carson City Mint closed in 1893. It never struck any nickels, dimes, or cents. The first branch-mint nickels weren't made until 1911.
There were no nickels made in the USA until 1866.
Sorry, no US nickels dated 1814 the first one was 1866.
The only years silver was used in US nickels was 1942-1945, the coin is face value.
All Nickels, Quarters, Half Dollars and Dollar US coins dated 1900 have the motto E PLURIBUS UNUM on them, a denomination is needed.
Please check your coin again and post a new, separate question. The Carson City Mint closed in 1893. It never struck any nickels, dimes, or cents. The first branch-mint nickels weren't made until 1911.
All US nickels except for the famous "war nickels" (mid-1942 to 1945) are made of the same metal, an alloy of 75% copper and 25% nickel. Popular misconceptions to the contrary, no nickels except for "war nickels" ever contained any silver.
There's no such coin. The first US nickels were made in 1866 and the first Canadian nickels were issued in 1922.
All US nickels (except for silver war nickels) are 75% copper and 25% nickel, with a present melt value of 4.9 cents.
There were no nickels made in the USA until 1866.
There were no Buffalo nickels issued in 1922.
Sorry, no US nickels dated 1814 the first one was 1866.
The only years silver was used in US nickels was 1942-1945, the coin is face value.
None have any silver value. US nickels made from 1866 to mid-1942 and from 1946 to the present are made of a copper-nickel alloy, not silver.
The only time US nickels were silver was from 1942-1945. They contain 40% silver. They have a metal value of around 2 dollars.
The US first issued nickels in 1866, and Indian head (buffalo) nickels were minted from 1913 to 1938.