I assume you mean conveyance, which OALD defines as
- [uncountable] (formal) the process of taking somebody/something from one place to another
- [countable] (formal) a vehicle
The formal tag indicates that while educated people might know the word, even they might not use in day-to-day conversation.
I am not familiar with how the term is used in Pakistan, so I cannot offer a direct substitute. If you are trying to indicate that you do not own or have access to a car, you can simply say I don't have a car.
There are a variety of ways to explaining that you do not have the means to get someplace. Suppose I live in the city center, and have neither a car nor a driver's license, and am invited to someone's house in the countryside for the weekend. I could explain that I can't go because I don't have a car, or because I can't drive, or more generally
I would need a ride — in order to get there, someone will need to drive me or otherwise arrange transportation for me
I don't have a way of getting there — this is less direct, if you are concerned your host will interpret the first as a request which it would be impolite to turn down.