Consolidation will have a very limited impact on your credit. You'll probably lose a few points from the new account and a drop to your AAoA, but those go away with time and are relatively small.
Are these federal or private student loans? For Federal loans, everything you need to know is here: https://studentaid.ed.gov/repay-loans/consolidation Basically, there is no financial benefit (your effective interest rate won't change), but there are some convenience factors to consider.
For private loans, you'll need to shop around to find favorable terms and a good interest rate - and you might be better off building your credit and establishing your income before refinancing to get the best offers.
