You can know when you will be able to join the marriage life, on the basis of your kundalini which is prepared by the astrologer and after reading it the astrologer can tell you when you will get married.
[Deleted advice to consult a specific person. On this forum, we only post to give our own answers. - Moderator]
And where is your chart?
I agree with Osamenor. Western astrology does not predic the marriage itself.
Some additional indicators of meeting someone of "marriage material" include transiting or progressed Jupiter in the 7th house, or in contact with the 7th house ruler.
Jupiter, but also slower planets entering the 7th house will certainly trigger your need for companionship, and they can make you search for a partner/spouse more systematically. I've seen this happen to many people marrying later in life.