What you need to understand is that B has invested allot of stones into the bottom right. There is no way to remove everything and if you try you are greedy and will be punished.
That said there is possibilities to both reduce or invade and live in B territory. both has pros and cons.
For invasion you want to consider where you can get forcing moves. You have moves such as Q2, M3 and H3. What you need to consider for all of them is that each of them will strengten B.
For reduction of the territory you want to play at the edges of your oponents moyo. You have moves such as P8, M5, O5, O6, Q6 or simular. For reduction moves you need to consider that you make B protect the point that s/he already has but prevent her/him expanding the moyo.
What else you need to consider is what is around B strength. If you start reducing B but B conteratack your top right group then you can find yourself in much worse situation than when you started. One way to play next might be playing something as simple as P10 before anything else. That is to prevent B expanding her/his influence.