dark screen macbookpro touch 2018 on unit
TRied resets nothing very dark
Question marked as
resetting the System Management Controller Reset the SMC of your Mac - Apple Support
resetting NVRAM/PRAM Reset NVRAM on your Mac - Apple Support
if no resolve—
Try plugging in an external monitor nd compare your results.
In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment
Make an appointment for a "hardware issue"
Genius Bar Reservation and Apple Support Options - Apple
Outside the USA
Contact Apple for support and service - Apple Support