How long does it take to publish in IEEE transaction

I need my paper to be published within 2 months, what should I do?

You cannot expect your paper to be published within 2 months in the IEEE transactions even in the luckiest case.

First, you have to submit the paper, and from your question it appears that you are still preparing it. Then, once submitted, your paper should undergo the peer-review process, and this can take anywhere from a couple of months to around one year, depending on the number of revisions, and it can even end up with rejection. Finally, when accepted, papers are not typically published in the next available issue (*), because its composition is decided well in advance, and so your paper will be published a few months later from acceptance.

(*) IEEE Transactions have an online early publication service which is disconnected from the journal periodicity, but even taking into account this, 2 months is too short a time.

A detailed description of the various stages of the publication process, with typical duration, can be found in the answer to What does the typical workflow of a journal look like?.

In addition to Massimo's excellent answer:

How often a journal appears has nothing to do with how long the review process will take. Those are completely disconnected things.

Generally speaking, TSE is an excellent journal. 9 months of review time is even on the low side. I think 1 to 2 years is more common. 2 months is completely out of the question. Furthermore, the fact that you assume it could be done in 2 months leads me to believe that your chances of getting accepted at TSE without a much more experienced co-author are very slim.

Simply look at existing papers, and on the footnote of the first page, you'll see the date in which a manuscript is received, revised (maybe a few times), and then the acceptance date. After that, look for the month+year when it appears in print. This should give you the lag time.