While generally speaking the limitation of devices that can go to I2C Bus is depending upon the total capacitance. The maximum number of devices on the bus is limited by the capacitance on the SDA and SCL pins, and is also a function of the pull-up resistance values on the SDA and SCL lines.

But as You have a 7-bit address. That means you can address up to 127 slaves.”
All of our modules and the common chips you will use will have 7 bit addresses. This means that you can have up to 128 devices on the I2C bus, since a 7bit number can be from 0 to 127.

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