Where can you take a 1945 dime to redeem its value?

You don't "redeem" an obsolete coin, you generally sell it.

1945 is a common date for dimes; most of them retail for a dollar or so in average circulated condition. That means that a coin dealer or metal dealer would pay you at most 60 to 70 cents for it, if they were interested. It would probably cost more than that just to drive to the dealer.

My advice would be to keep it as a curiOSity piece or find someone who is just starting out in collecting and sell/trade it to them.