How much credit did I get for making quicker payments on my car and paying my rent?

The lease does not effect your credit score, but you showed a good pay history with the Leasor and that is why you didn't need a co signer this round. They three year plan will ist you in only showing that your payments were made on time, and the score jumps in happiness when it's paid in full. Just a note: a few simple things will up your credit score, for example same residence for 2 years or more, same job for 2 years or more.