PORTB Collective values ??

im new to this so please if you can help treat me like a three year old please.. im using a 16F84 programming in basic, is there a way to read the value of PORTB collectively ie: if there is an input at PORTB.0 and an input at PORTB.1 but all others have no input the value would be 2 i how would i read all the ports and give the sum of them all, i realise this may be a very simple question but not to those who dont know,

If your programming in basic a simple line such as

value = portB

will read all portb inputs and place result into "value" which can then
be tested to see what bits are high or low