How can I become a pharmacist?

That's what most people do first. Most professional schools do not require a BS for entry into the school but do require a multitude of prerequisite courses. I'm a sopre in undergrad school and I'm a biology major in the pre-professional degree for med, vet, dentistry, and pharmacy and all the courses are pretty much the same. You'll have to have basic english courses like 101 and 102, up to or higher than pre-calculus, inorganic and organic chemistry 1 and 2 with the labs, physics 1 and 2 with the labs, communications, humanities, and a bunch of biology with labs, you'll also have to take the standardized test particular to pharmacy school. You could go to an undergrad school and take all of the courses you need for pharmacy school, like pre-vet has to take the GRE and pre-med has to take the MCAT, and start pharmacy school without a BS as long as you have all of the requirements and get accepted.