You can request your transcripts at the university's registar office. You need a fill a specified form by your university and submit it to university with the required amount. Some universities require that you need to forward this from on the behalf of your college. Different universities in Pakistan had diffrent approaches to issue transcripts.
For 10th standard and +2 transcripts you can get copy of the original certificates and get them attested/notarised from your schools.
Each university will have different pricing for transcripts. Universities will charge 200 rupess to 1000 rupees for each transcript.
Suppose, you are applying to 1 university and now you are in final year first semeter. By this time you will have 6 transcripts. and Let us assume that each transcript will cost Rs. 100.
- Cost of 1 transcript: Rs. 100
- Cost of 6 transcripts: 100 x 6 = 600
so, one set of transcript costs 600 Rs. If the university you are applying requires 2 sets of transcripts you need to request 2 sets from your university which would cosr 600 x 2 = 1200.
Most of the universities ask you for 2 sets where as few univs ask for 1 set.
In general, you can get transcripts from your undergrad university and post it to American College. Few american colleges exepect the offical transcripts to be sent directly from your university.