hello.
i want help please, when i put the bump node it aplies just for the purple lines texture, even i did the multiply node to link between them and the other part (the black one) but it seems not working and just aplly for the lignes.
Bump needs gradients to look nice, not sharp transitions. So blur the image and also reduce the bump distance which now says there is 1m - or 0.831 due scale not applied - distance between black and white, which makes zero sense. Try using microdisplacement temporarily to figure out what the number should be. Bump distance should match whatever you need to set Displacement scale to, in order to produce similar normals.
thank u i ill try and see
Is the image resolution high enough?
If the image has sufficient resolution, change the options in the Image Texture Node (Interpolation).
https://docs.blender.org/manual/en/latest/render/shader_nodes/textures/image.html