Could I change a cracked screen replace with another rca

Might want to look on Youtube (or similar) for RCA tablet repairs. The video hits may not be specified to your particular unit but the principles applied to disassembling/repairing these tablets are the same. And of course, be very aware that during the repair process one might potentially end up with 2 cracked screens. Research, patience, attention to detail and the correct tools at hand are all good things to keep in mind. :-)