How many hours till it closes up-belly ring?

Your question isn't very clear, but I will give it a shot. The time it takes for a navel piercing to close or "heal up" depends on how long you have had the piercing. The longer the piercing has been in place with jewellery, the longer it will take for the piercing to close with the jewellery removed. Generally if you have had the piercing with jewellery over a year the piercing can take several months to shrink down to the point where you can't put jewellery into the piercing any longer. If you have only had the piercing for a few months then it can take a few weeks for the piercing to close.