1) From the Projects screen, tap the Project you wish to share to go to it's Summary screen.
2) Tap "Share Report" to generate and preview your report.
3) Tap the icon in the far top right of the screen to show the Export options available.
4) Tap "Email" to email your Report.
Note: The "Email" option above uses the native Mail app on iOS and as such, requires an email account be set up on your device. If you wish to use a third party email app, tap at step 4 tap on "Open with..." instead and select the app you wish to use.