C# Moving Player Without Input

I want my player to move on the X and Y axis and change direction when you click on the screen anywhere. It should be simple but I can not think about getting it stated.
All I want the code to do it...

• Move the player toward the spawned sprite on either the X or Y plane
• Constantly check if the player tapped the screen while in a box colider around the sprite
• If yes spawn new sprite destroy old sprite change direction toward sprite
• If no stop player go to 'gameover' scene

I feel like itll be some sort of transform on the axis then just a while and an if statement. I am so lost and cannot think of what I need to start. Please help thank you very much!!!

 

can the player move diagonally? Or just 1 axis at a time?

 

Just one axis at a time its 2d i guess I didnt mention that and it is moving on a ground directly under it. Thanks for the reply let me know if you have any more questions