Hi Sneha! If you have booked a four wheeler parking then you don't have to pay for the two wheeler parking. You can park your two wheeler along with the four wheeler. Bcz builder has allotted you a car parking space. Even i have both car and bike and i am doing the same and builder and society members have no issue.
Ideally, you have to pay for the car parking not for two wheeler. Sometimes, it is seen that builder has a spare space where owners or guest can park their car and bikes. If your builder has allotted one car parking then you can use that space to park your two wheeler.