Harry Kane has scored 1 goal and 1 assist in the Champions League in 2 appearances, while Kane has also scored 8 goals and 4 assists in 7 appearances in the Bundesliga. I believe Kane et al will be difficult to stop and Tuchel's plan for that match is to win, but if Galatasaray manages to win points in that match then I believe they will have a good chance of qualifying for the last 16.
It's difficult for Galatasaray to get full points against Munich and I'm sure it's easy for Munich to beat Galatasaray, Kane and the Munich players now seem to have adapted quickly so we can see Kane perform very well in the domestic league and UCL, Munich will not share points with Galatasaray like Usually the full three points are Munich's main target to qualify for the next round.
Tuchel will of course prepare a mature strategy in facing Galatasaray later, even though Munich is playing as a guest, it will not stop Munich from winning the full three points and leading group A so that they remain safe in qualifying for the next round of 16. So far Munich has played very well so they seem to have a chance to win the UCL title this season if they perform consistently.