Editor indicated that if minor changes are made, paper could be published: what are the chances of publication?
Yes, if you've only been asked to make minor changes, the paper stands a very good job of being published.

Now you've got to work methodically, and be meticulous with the detail.

Go through each required change one by one. If it's not an unacceptable change, make it; and in a new, separate document - a log of the changes = write one or two sentences to describe how you've made the change (sometimes, a word or two, e.g. "spelling corrected" might be sufficient). If it would be an unacceptable change, write a few sentences in your log of changes about the basis on which you're sure it doesn't need changing.

Work through all these with any co-authors.

When you send the changed paper, add a covering note. In that, copy and paste each of their requests for a change, and after each one, add your sentences from your log of changes about either how you've done the revision, or why you haven't. Your editor may have sent you a proforma or template to fill in, that would do the equivalent job: if they have, use it.