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You'll find the Play Store app in your Android's app drawer.  Many smart watch manufacturers, including Fossil, TicWatch, Armani, and Michael Kors, use Google's WearOS operating system. Check your watch's packaging and/or manual if you're not sure whether it's running WearOS. To download the app, search for wearos in the Play Store app, and then tap INSTALL once you find it. After a few seconds, a message will appear on the screen.  A link to the full terms will appear on the screen. Continuing with this method confirms that you agree to these terms. Now that it's installed, you'll find its multicolored "W" icon in the app drawer. If you're still in the Play Store, you can just tap OPEN to launch it.  It's the blue button at the bottom-right corner of the screen. You can deny sharing your data if you wish. Once you make a selection, the app will scan for your watch. It may take a few moments for the watch to show up. This will bring up a code on both the Android and the watch. You'll do this action on the Android. The codes on both the watch and the Android should be identical. If they aren't, restart the watch and try again. Once completed, your watch will be ready to use with your Android.
Install the WearOS app from the Play Store . Turn on your watch. Tap Tap to Begin on the watch. Select a language and agree to the terms. Open the WearOS app on the Android. Tap Set it up or Start Setup on your Android. Review the terms on your Android and tap Agree. Choose whether to send your usage information to Google. Tap the name of your watch on the Android when it appears. Verify that the codes match and tap Pair. Follow the on-screen instructions to complete the setup process.