Hey, @Taj30057781dv2i.Welcome to the Lightroom Community. I'll need more info to help you.
You've tagged Android - What device model are you working with? Do you see an error or pop-up in-app? Please share more details, like screenshots or video recordings of what you see.
From the words I could understand, I think you need help getting started with Split toning in Lightroom. Color Grading replaces Split Tone. Check this to learn more: https://helpx.adobe.com/lightroom-cc/using/edit-photos-mobile-android.html
Looking forward to your response,