PSPICE temperature simulation of a resistor
1) I would not use a circuit like this to evaluate a TC. If both resistors have the same TC, the voltage at Node1 will not change over temperature as you have made a voltage divider. I would replace R1 with a current source, then the voltage on Node1 is directly proportional to the value of R2. I'd plot V(node1) / Isource = R2

You would see variation when only one of the resistors has a TC but then you'd have to calculate that back and... that's too complex for me, I prefer keeping things simple.

2) tolerance is something different, tolerance is statistics. 10% means it can be up to 10 % higher or lower in value. Component spread (the actual name) is simulated with a statistical (Monte Carlo) analysis on top of your "normal" simulation. MC can do 20 simulations and then tell you average and sigma values. See the manual how to make a resistor that has statistical properties.