Depending on the saving method you've used, you can transfer your game to other devices with the below ways:

Android > Android
You can use your Google Play credentials to load your account. Kindly download the game in your new device and complete the tutorial. Next, simply tap on your player profile, select Settings and then General. Sign in by using your credentials!

iOS > iOS
You can use your Game Center credentials to load your account. Kindly download the game in your new device and complete the tutorial. Next, simply tap on your player profile, select Settings and then General. Sign in by using your credentials!

Cross platform
The only way to transfer your game cross-platform is Scopely ID. Kindly download the game in your new device and complete the tutorial. Next, simply tap on your player profile, select Settings and then General. Scroll down to Scopely ID, select Log-in and enter the correct credentials!