Recently I’ve started my new project and i faced this UV issue when i import my mesh from blender. I did a perfect UV map in blender and tried every other way but it show the same result.Does anyone have any solution please?
Well, that is a bad UV map 
Typically, it should be fine. Make the UVs in Blender and import with defaults, should do the trick.
What do you get when you show the UE UV map? ( 0 )
No, channel zero 
( channel 1 is the lightmap )
Well, that’s doesn’t look right to me That’s the problem, I think.
Are you just making one UV map in Blender?
Ok, so channel 0 should look like that ( more or less ) after importing to UE.
What version of Blender? ( and which exact version of UE? )
Blender 3.5
UE 4.27
Ok. I don’t understand
Maybe you can upload the FBX of the model, so I can take a look? ( something like google docs, you can PM me if you want ).
this is the one, i’m searching the solution for 2 day 
Ok, I open it in Blender, and I see nothing… 
Hold on… just took a bit longer to download that I thought
same as previous
watch the 0 channel
ya it works. i import the same fbx that i gave and applied cube projection
but when use the existing mesh it gives that bad result.
can you tell me why?
I applied to cube projection in Blender, the UVs were not ok.
Then, after that, I imported to UE.
How do you make the UVs in the first place? Or did you get the model from elsewhere?
Bro, can i get your discord?