How do you get rid of something like that?

So I went to my laptop and wanted to turn it on and when I wanted to turn it on I have something similar to a scratch, how can you get that away?

Take a slightly damp microfibre cloth and wipe over it. Is possibly only dirt.

We've tried it with detergent xD… I'll try

Did not work

If not with cloth because of dirt then only helps a new display.