I'm been watching the BC1-1908 livestream/video . Here what I have so far.
I have gotten to week 2 and I'm having problems with the UV layout. I selected all of the right edges on the sword that was shown in the livestream/video but the UV layouts did not turn out right when I turn on the display stretch in the UV editor all my UVs are a green colour. Please help
My blend file https://pasteall.org/blend/2279700d051044cf933c61a2eaec2868.
Did you try Average Islands Scale? If they're not averaged, it shows which UVs have more pixel density with the different colors, which is confusing when you're using it to find stretching. Also you have a funky hidden face somewhere, which is also probably throwing off the colors.
I have isolated the funkiness in your sword. It's in the tip area where some verts look like they were merged, but actually were not. Hopefully these images help.
You have an issue with the mesh, a couple of stray verts.
one on either side of the sword (left image), see how the orange line passes the vert next to it and continues to the next vert?
if you merge each vert with the one next to it (right image) this should solve your problem.
select everything and unwrap again, everything is a lovely shade of blue. A slight greeny blueish on the tip of the sword but nothing to worry about.