@dimasrahmatnuriza You will need to buy an Alteryx license. If you have done this already, I imagine they will email you the key - if you can't find it get in touch with Alteryx themselves. If you have a license as part of a business, get in touch with whoever manages Alteryx at your business.
Alternatively you can start a free trial, either by opening Alteryx Designer and selecting the free trial options, or by going here: https://www.alteryx.com/designer-trial/free-30-days
