It depends! A lot of the time, you can move in after the deal closes (closings normally take around an hour). However, sometimes, the home isn’t yet vacant and won’t be for a few days, which requires waiting until the home has been vacated.
Typically, you’ll need a score of at least 620, but this varies between lenders – some will approve a score as low as 580. I’d recommend asking a loan officer to know what the current requirements are because of the continues changes and tendency for the criteria to vary.