Points by closed opportunity

Hi!

Dynamics 365 is knew to me and now I´ve got a task I need some help with.

I need to make a solution that gives the user points when a business opportunity is closed.

If it´s closed as won the user is given 5 points and if it´s closed as lost the user gets 1 point.

For the moment I use the free trail of Dynamics 365. I´m really grateful for any help given.

Best Regards