2018 GT Screen went blank. What else should I do...?

What screen exactly?
Have you scanned the car for codes?
This car should still be under warranty unless it was a very early year model.

purplepills said:

My apologies I should’ve included that information, my Ford sync screen, the radio, climate control…
No I haven’t checked for codes. But that’s a good idea. I will do so.
I’m outside the warranty mileage unfortunately

Click to expand...

As JBert said that won't be covered under the powertrain warranty. If it was the instrument cluster screen then it probably would have been. Extended warranties sometimes come in handy and in this case it would have. If it's a module problem it can get expensive.
Scan the car for codes with a good scanner. It will say if there's any communication errors. Also, check the relevant fuses. The owner's manual will tell you what fuse does what.