Hi Neeraj,
Thanks for checking out our plugins!
The Events Calendar Pro and Filter Bar are two separate licenses, but we do have a few bundles available that I would recommend taking a look at (our Importer Bundle comes with Events Calendar Pro, Filter Bar, and Event Aggregator).
You will also need the (free) The Events Calendar plugin installed and activated on your site to be able to use Pro and Filter Bar, which you can download anytime here.
Please let me know if you have any more questions!
Thanks,
Jennifer