Yes everything is in the title.
This will not do you any good, since your screen can only display 60 fps. Deactivating FreeSync will only give you so-called tearing, which means that you will also only see 60fps - just with artifacts.
Would have to go into the graphics driver settings - but it would have to be what to find on google. (And of course on the monitor if you have a desktop pc)
I think you mean disable V-Sync, right?