Credit card

So I recently got one and I haven’t used it yet. Me and my boyfriend are buying a house very soon probably within the next year. Do you think my credit score could go up a good bit if I use it often for little things then pay it off. I just need it to go up like 50 points. They don’t look at my score only his but I want mine to be decent so if we did have to use mine it wouldn’t be crappy. Also if it’s in the 700s there’s a program we could use to only put 1% down. That’s another reason why I want it to go up.