Denise, depending on how 'handy' you are - you could probably do this yourself

With a beaded liner it's important to have the floor be a ~little below what they cut the liner to - the liner needs to stretch into place. If you have too much floor, the liner will wrinkle - alternatively, if the floor (or wall cove) is to deep, there will be undue stress on the liner and it will fail prematurely

I assume you have a sand bottom which will need a little retroweling before the new liner is dropped. If you want any tips and tricks for the troweling and think you can retrowel it yourself, let me know - I've done this a few dozen times

A strong shop-vac or vac/ blower will be needed to set the new liner - I hope you have access to one.

What are the shape and dimensions of the pool?

I, and the others here, will be here to help, should you need it