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This is the official Adobe Flash Player download site. Adobe Flash Player is slated to be discontinued by Adobe at the end of 2020. Most web browsers still support Flash in the meantime, though the functionality may not be enabled by default.  The Google Chrome browser does not require you to install Adobe Flash separately. If you just want to use Flash in Chrome, skip to the Enabling Flash in Chrome method.  Microsoft Edge does not require you to install Flash separately. If you use Edge, see this method. Adobe often offers other apps as part of the download package—if you see other apps listed and don't want to download them, remove the checkmarks from their corresponding boxes before clicking the button. Once the installer is saved to your computer, you'll find it in your computer's default Downloads folder. It'll usually be called something like AdobeFlashPlayerInstaller. If you're using a Mac and see a warning about the app being downloaded from the internet, just click Open and confirm your admin password to start the installation. If you're using Windows you may have to click Yes or Allow to run the installer. Once the installation is complete, you'll be able to enable Flash in your favorite web browser. See the method for your web browser below to learn how.

Summary:
Go to https://get.adobe.com/flashplayer. Review the download options and click Download Now or Install Now. Double-click the Flash installer in your Downloads folder. Give the installer permission to run. Follow the on-screen instructions to complete the installation.