Car Loan For People With Bad Credit

apply for a loan credit score drops?
i have applied for a car loan over the internet. a used car dealership website advertises they can finance people with bad credit, bankrutcy or no credit. i dont know how they can do this or find a loaner. my understanding is IF you have a bankrutcy or BAD credit or NO credit its like very hard to get a loan for anything. i hadnt heard from them yet. i am wondering if they had been going through multiple lenders to get me financed. Question……If you apply for a loan they have to check your credit score ect. how many points to you lose from they check?
You can use this credit monitoring service to pre-estimate future scores for different scenarios of such payments – buildcredit.ifastnet.com