Yes, a player can accumulate TP from one scenario to the next. What TP that are not used carries over to the next scenario (check out page 14 - Tactical Mission Roster); You will note that first columns are Tactical Points "Start" "Repl" as in Replenished, and "Total" and about 3/4 the way across the table are two columns under Tactical Points named "Used" and "Left".
So the first scenario the Russians start with a total of 22 TP; if he Requisitions 19 TP worth of RGs, he would in TP "Used" write 19 and in the "left" column 3. The PM 4 Feb scenario, he writes in the "Start" Column 3 and say makes a TP Replenishment DR and receives 18 TP, which he writes in the "Repl" column, and 21 in the "Total" column - this process continues.