I am a dropper. I haven't scored good in neet so i wanted to get admission in DU in microbiology. But my scores in pcb gives me only 87%.

If u are from ur category  u will get it in south campus colleges if this course is available there otherwise various other courses are there in bsc like life sciences ,zoology hons food technology etc. Fill the form positively with various bsc preferences and check the cutoff when it will be out on official sites of DU. Hopefully u will get . Best of luck

You shall not be able to get good reputed DU colleges with that marks. However, you may try for other less reputed , peripheral colleges. Kindly keep yourself updated when the cutoff list publishes.