bevel node not working

Hi Sumit SSMM3008 ,

First of all, I think the Bevel Node only works in Cycles and then there are some settings you got wrong:

Oh, and you'll need some lighting, when using the Cycles Render View.

Also, I find these 'double bevels' a bit weird:

but maybe that is intentional...

Hi Sumit,

To remove those double lines, is done by Merging Vertices that are close to each other, but we have to be careful, not to remove too many. After some testing, I believe that the following Value for the Treshold Distance works. First, Select the A and B butoons only (ALT+A to Deselect everything, and then you can hover over the buttons (one by one, of course) and press L.) then : M > Merge > By Distance and adjust the Distance to 0.007:

Hi Sumit,

Don't worry about asking questions: you're not disturbing me/us

This one is easy:

you are looking at the Material Preview Mode, that uses Eevee (even if you have Cycles as Render Engine!), simply switch to Rendered View:

I'm glad that's solved. In other news, the console is looking good, those are some nice screenshots, you got some good vibrant colors going on. The speakers have some artifacts, but don't worry about those, as you go further into more complex modeling you'll see all about quads and SubD.