Green beans are a vegetable and therefore really must be pressure canned, not water bath canned. It sounds as if you did water bath canning.
This page has directions for pressure canning green beans. There are several links to more pressure canning directions on this page as well.
Other than the processing it sounds as if you did everything else right.
Unfortunately you will need to dispose of the beans already done. Throw it away where no animals can get into it. It can make them sick as well.
I'm sure this is discouraging but I hope you will try again.
Many people used to water bath can green beans. They process them for a very long time. However it is now recommended that you pressure can them.
You are at risk of botulism if you only water bath can.
I am sorry I can not recommend a time for you for water bath canning green beans. The only recommendation I can give is to pressure can them.Canning Green Beans
Green beans are a vegetable and to ensure safety must be pressure canned.
If you don't have a pressure canner do you know someone you could borrow from? Or you might consider freezing your green beans.