Credit Score Management

Thinking about buying my first home and have no clue as to what the credit score I should have to get a home. Im trying to build up my credit but want to know what score to shoot for.

I am working on rebuilding my credit, and believe I can reach 600 in the next couple of months. I’m looking at possibly buying a nice starter home, and there are many in my area in the $50,000-$60,000 price range that I could easily afford. I’d be able to get the 20% down that is usually desired. I’m gainfully employed, making about 50k/year.
So what is the minimum score I should work for before even thinking about talking to a Real Estate Agent?

I want to buy a home with the minimum down payment asking price required by the company selling the house. My credit score but isn’t that fantastic. Even though I can make the mortage payments now, my credit history is kinda low due to my past. Step by step, what should I do?

I could not get a car since my credit is not excellent enough. Does anyone know what is the actual credit score to obtain in order to buy a used car? Specific answers would help. Please no “IDK” answers.

My Average credit score from all 3 agencies is 651. What are car dealerships looking for in a credit score? My Fico score is about the same. Will I get a decent rate?