MCUFRIEND_kbv has examples to read ID and registers from any display controller on a display that has read access. This is usually the case with shield for Arduino UNO.
See LCD_ID_readreg.ino and LCD_ID_readnew.ino.
Most likely your display is not recognized, and a default controller driver is used, that doesn't work with your display. You may need to enable support for your controller.
If you post a link to your display, then you could get more precise answers.
Also read How to get the best out of this forum.