Contrasting "is' to "have" is confusing as the first is singular and the second is plural, so let me start by making a slight change to your question:
What is the differences between '
is been created' vs 'has been created'
As you can guess by the strikethrough, the first form is wrong. I think you probably meant "is being created".
So here is the difference:
"Is being created" means it is in the process of creation. This process is underway, started but not finished yet:
Something special is being created in our town. Hopefully we'll get a chance to see it from close quarters when it is completed.
"Has been created" means that the creation process is complete and we can see the result:
Something special has been created in our town. You may not have heard about it but you can discover it by simply taking a stroll in the central park.