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After searching from other side, i reinstall python3 and tf2 by the command as below

sudo apt install ros-noetic-tf2-tools
sudo apt install python3

and after i tried alot of stuff(looked into tf tutorials,etc.).I came back and try again the instruction of the tutorials from the start. There are still some problem but this time I tried to run with the command below and delete the forwardslash"/" in the basic shapes.cpp.

rosrun tf static_transform_publisher 0 0 0 0 0 0 1 /map /my_frame 10

I'm not sure the things i explained is the solution but it solved the problem.