I pad Pro with sim can't receive call or text

An iPad is not a telephone. Even an iPad with cellular hardware and a cellular data plan has only a data connection, not a phone or SMS/MMS connection.

If he also has an iPhone on the same Apple ID, the iPhone can act as a relay for SMS/MMS messages.

On the iPhone, visit Settings > Messages > Text Message Forwarding and enable the line showing the iPad.

No iPad is an iPhone. None.

An iPad, alone, cannot make cellular service phone calls or SMS messages.

You need an iPhone paired to an iPad to be able to do these things from an iPad.

Sorry.