Some years ago HEC decided to end two year degree programs. And , I think they have nearly ended them now. Or ,they have got quite good progress in that area.

As per my knowledge ,getting one year bachelor's degree
is not possible in Pakistan.

You can do online course. That will be basically a diploma programme having knowledge that they teach in bachelors. But ,completing all credit hours is impossible in one year. In some countries, they allow students to do it in one year ,but at first they analyze the past studies of students. And most of the times,this type of program is offered for an experienced person,who got some professional Job in the past. So ,it's near to impossible to get bachelor's "degree" in one year.
But yes , you can earn knowledge yourself and you can study yourself to make you get knowledge that's near to what they teach in bachelors. Or online courses as I said before, you can search them.

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''Sufficient for us is Allah , and He is the best Disposer of affairs" Al-Quran