How do I achieve this text effect? (Similar to Sonic's end of level)

Hi, I’m trying to achieve an effect similar to the one in this video.

I already have my score system set up, as well as a bonus score for collecting over a certain amount of pickups. When the player completes the level, the score and the bonus are added together to reflect the new total, but they are added together instantly. I have all the maths sorted - so this question is purely related to the way in which the numbers are displayed when the math takes place.

How would I achieve the effect where the numbers are added together slowly ?

Hopefully I made this clear enough to understand.

Thank you.

You could have a timeline in the blueprint that represents the amount of time you want it to take to add up the score, then at each update you simply interpolate between 0 and the max score based on how far through the timeline you are, then store that temporarily and show that instead of the true max score.

Cheers,
Nick