how do i properly import textures from Blender to Unreal Engine 4.27?

Hello, lets see what the resolution of the imported texture is. Open Windows Explorer and check out the texture resolution. I would imagine your preferred resolution would be 2048 x 2048 or 4096x4096.
image

Verify the imported texture is the same image.

  1. Open the Content folder.
  2. Find the texture maps.
  3. Double click on them, one at a time.
  4. then verify the resolution of the imported texture.

If the image is smaller than 1024 x 1024 then I would assume you would just need to export a higher resolution of the preferred texture from your source DCC. Make sure your Albedo, Normal, AO, and etc textures are all a high resolution.

This is a simple material set up to verify your albedo and normal map.