the datasheet I found here
Communication with all registers of the device is performed using either I2C at 400kHz or SPI at 1MHz
(MPU-6000 only). For applications requiring faster communications, the sensor and interrupt registers may
be read using SPI at 20MHz (MPU-6000 only)
I have no idea if a 400 kHz I2C-bus is fast enough. You seem to be in the design-phase of your project.
So you should evaluate what is the fastest rate of values you can get out of the device. And then to analyse if this is fast enough.
I guess this is a quite challenging job to do. But you should spend some thoughts on it before starting to build a prototype.
A 1 MHz and even more a 20Mhz SPI-bus is sensitive to electromagentic noise so the wiring or PCB-design should be done carefully
I want to emphasize: it might be completely sufficient to use a 400 kHz I2C bus but you should check it.
best regards Stefan