HELP - Accelerometer sensor (the actual measurements on the chart), do not know what's wrong

Hmmm, i do not know what you mean to "JOIN" to Label.Text.
Sorry, like i said im still learning.

You wrote about wiring diagram so in the attachments i send two schemes showing how everything is connected. It's a simple layout. Of course, the cable from ESP32 is connected to the USB of the laptop.