Legacy Versions Unreal

I was wondering where I can get a copy of Unreal that works on High Sierra.
I downloaded 4.25 today and found out I am a new computer away from using it…
Is there a version available that will work with OS 10.13.6?
Thanks in advance

What is your hardware specs?

Mac Pro mid 2010, 5,1 quad core, 2.8 16gb smc 1.39f11