I looked on Google and didn’t see a CVS or Walgreens close to northwest. I will be in Briscoe next year. Where would be the most convenient place to pick up prescriptions?
There is a CVS on Kirkwood, not too far away. Also the IU health center will deliver prescriptions to the dorms. Great service - they just show up in your mailbox 
Probably most convenient is the CVS on Kirkwood or the one on North Walnut. For some unknown reason there are no Walgreen’s in Bloomington. There is also a CVS near College Mall and a bus that goes to the mall. Your best bet is the above suggestion–Health Center.
Target at the mall may work as well.