Added ERC20 token by adding token through custom token

Hello my issue is I do not see the amounts in dollar figure of my token on Metamask? I went ahead and added the token in token custom by finding the address of the token through Etherscan and copied the address and put in the custom token which came up with the token. I then added and it gave me the amount of tokens I own but no amounts in dollar amounts. I can go on to Etherscan and look at my transaction were it shows me that I hold the token and the amount at time. How do I know that the token in mine and how can I transfer the amount to Metamask?

Thank you