Im Big M :
On this 1. Acer can I upgrade cpu it have i5-7200U
You cannot upgrade the CPU, it is soldered into the motherboard.
I believe starting with the 5th generation Intel Broadwell CPUs released back in 2014, all mobile CPUs are socket BGA which means they are soldered into the motherboard. There are boutique laptops that used desktop Intel CPUs which can be upgraded, but because they are boutique, they will be pretty expensive.