guys, can someone tell me how to make things reflect? As an example, follow the image below:
I tried to go to the reflective option of roblox studio and changed the material to glass, but it doesn’t reflect like a “mirror”. I want this effect on the metal material!
pls help me guys 
I am not sure this is possible unless the whole scene and lighting is created in Blender or something.
as Fruit said , thats impossible without blender
This screenshot might have been taken with a program like RoShade running, RoShade allows roblox to have much more advanced graphics including Ray-Tracing.
Though i did see something about the Future technology adding reflections.
but how to do this in blender? If I make it reflective, will it come to roblox studio?
No. You would need to use textures.