If that's what has been confusing your mind till now then you can relax now. If you force to open it with Windows Explorer or File Explore, being cautious that this will damage or delete any of the data contained within it. If you forgot the ZIP open password, then you won't be able to open any of the files within this ZIP file. Moreover, it becomes easier for software distributors and also for you to upload the compressed less space taking zip file on mail attachments or on other websites. Then you can Email someone an AES-encrypted file and text them the password,t his would be the best and safest way to share documents without the fear of being modified or stolen by unauthorized person.
Besides this side, ZIP also provide an encryption function which can password protected your ZIP in in two different strengths: 128-bit AES and 256-bit AES. Most of time we like to use ZIP file to share or send important file or folder online because it can compresses large files, this feature allow all the files and folder contained in ZIP to be compressed in way at the most extent.