What Font Is Used To Write Krewella ?? (Slant But How To Make It Look 3D Kind) ??

Why? You can do that in photoshop

You could do that in MS Word. It's just a second copy of the logotype, coloured red and offset slightly, behind the white version.

A so 3D look is not possible to do with only a font. A font as got only 2 colors : filled ans empty.
But you can do that easily with any of graphics editors (PhotoShop, Gimp, Paint, Inkscape, etc.) or many word processors.