So I have 13 Total Shares (Non Rejected) and my pool is Mining Pool Hub. It does not show that I have gained any Ethereum when I go to Dashboard (Under Ethereum) on Mining Pool Hub. Do accepted shares mean that I earned coin or no?
You probably have gained no Ethereum as of yet because even if your shares were accepted by the pool it doesn't mean they were accepted by the network. When your pool mines it's next block the percentage of your shares of the total network will be the percentage of the block reward you get.