Weird character output from MPU-6050 running STM32bit and FTDI-USB

Hello,

I'm really new to arduino.

I have some weird output from the sensor that I really don't know what I am doing wrong I hope someone can help me.

Thank you so much

Screen shot is my code and my monitor

You set your serial interface to 57600 baud on the STM but configured your serial monitor to 9600 baud. Do you see the error?