Screen turns off when I open it more that 90 degrees

Hello,

Last night before going to bed I opened my computer to check some emails, then I opened it more than 90 degrees and the screen turned. The rest was working fine, audio was still playing, keyboard still lit up and Touch Bar as well. I am pretty sure that this is a hardware issue but I might be mistaken, I restarted it and the issue persisted. What suggestions do you guys have ? And if the screen needs remplacement what would be an example for a price ?