Can they fix a Samsung Galaxy A20? I dropped my phone and it the screen wont light up anymore, I just get little flickers of colors. Also, what are their prices like?

Yes they can

I used to work here. If you are getting any signs of life from the device such as the screen flashing ,then it should be 100 percent fixable!

They will look at it for free and then let you know if they can repair it. If so, they will give you their repair price. If not, there's no charge.