NATO countries "taken over" by the USSR won't see a resistance/guerilla movement lasting long. First off, historically speaking a resistance/guerilla movement almost always needs some sort of outside assistance for weapons and also support that gives the resistance some hope that if they weaken the occupiers enough their outside ally will help them truly liberate their country. Before anyone jumps on this revolutionary situations, especially where the existing government/colonial has little public support and limited if any outside support can be an exception. During the 1939-1989 period, especially 1939-1969, the USSR had a very brutal but intelligent policy for suppressing the newly incorporated countries - they were more successful than the Nazis or Japanese in that their use of unrestricted brutality was applied in an intelligent (usually) pattern. For those under Nazi occupation or Japanese occupation it was all sticks an no carrots.
Using France as an example, you'll see senior political and military leaders either executed or sent off for re-education through labor, and their families blacklisted at best or possibly sent to labor groups. There will be a gradual replacement of bureaucrats from the top downwards with those more politically acceptable - the higher up the faster they go, with some regard for efficient functioning but not a lot. Naturally all businesses will be nationalized, labor unions consolidated in to one worker group (which of course can't negotiate or strike). Any worker stoppages, failures to meet quotas will, of course be "dealt with". The wealthy and bourgeoisie will naturally lose tons of private property, and be turfed out of homes and so forth.
All food distribution will be under the control of the government, and as far as farmers holding out ask the kulaks how well that worked and the Ukrainians what happens when all the crops are taken by the government and you only get inadequate rations. Areas that support any maquis forces will find towns burned, selected individuals shot and the rest deported - possibly all the way to Siberia.
On the other hand, those reliable French communist elements will do well. Going along with the regime, provided you don't come from a negative background (which condemns you to manual labor no university for you), means you have access to education you may not have had before. Political reliability means you and you family are relatively safe from a visit by the KGB (never completely of course), and you are at the head of the line for promotion, rations, and so forth. The reality is that the people of France (or any other "absorbed" NATO country) will see themselves in the light of how long the "occupation" of Eastern Europe has lasted. The expectation of liberation won't be potentially over the horizon, no Allied aircraft overhead attacking the occupiers, no BBC telling the occupied nations of victories in North Africa, of the enemy being defeated and pushed back on other fronts etc. Although the French love the myth of the resistance, in WWII the resistance was pretty small until well in to the war when the Germans were no longer seen as the for sure winners, but rather seen as going to lose eventually.
Immediately after the occupation there would be resistance, perhaps some of it on the "nothing to lose" basis. Once the war is over, and I am making the assumption that if the Russians/WP get this far the war will end, most of the population will decide better to keep their heads down and avoid the firing squad, GULAG, and disaster for their family.