How to make shader like Alpha Wars game ?

Hi Everyone, i’m a beginner on unity and i want to make a shader like ‘Alpha Wars’ Game:
98251-capture.png

98252-capture2.png

What is Required to make a highly textured models and how to make a shader to make the game real like this one?

Those models are simply well made in a 3D program. With proper textures/normal maps/glossiness made in Photoshop or any other bitmap editor.
I think i’m also seeing some ambient occlusion (made possible with Unity’s post processing stack)
The effect on the gas station’s metallic parts are possible with Unity’s built in standard shader. I suggest you take a look at the shader’s tutorial. It’s just a cube map applied to that object and then tweaked the shader’s metallic and smoothness value.