I have found logo that interest me. The logo consists of words that looks like merged together and have double outline. Here is the logo

Is the words have special font that can make words like this? Or is it edited? How to make this type of Logo?

That looks like a type of font. I would do this search "Calligraphy font free".

Maybe this, using dynamic offset, z-order and node tool for control:

Are you trying to reproduce the text outline? If so, here's an old post that tackled the problem.

https://inkscape.org/forums/questions/arch-v-curved-text/

Hi guys.... Thanks for the answers.I have done it but i don't know why the words in red part looks bit off to me

I'd use one of these two options: Path>union (converts text to path), or Change the fill rule.

@TylerDurden It works.... Thanks and once again thank you guys for the answers