The MPU6050 is a Motion and Position sensor device that operates on an I2C bus. Importantly it is a 3.3 Volt device that is popularly used to provide 6-axis information with other devices and not just the Raspberry Pi - so connection of modules incorporating it may need special attention/configuration to work on the RPi.
The device is made by InvenSense and the main product page is here.
Some past question and answers have suggested that specific set up steps may be required, e.g. not-all-devices-that-are-connection-via-i2c-are-showing.