clean up
US /kliːn ˈʌp/
UK /kliːn ˈʌp/

1.
to make a place or thing completely clean and tidy
:
•
We need to clean up this mess before mom gets home.
•
The volunteers helped to clean up the park after the festival.
2.
to make a large amount of money, especially illegally or by exploiting a situation
:
•
He really cleaned up on the stock market during the boom.
•
The company cleaned up by selling overpriced medical supplies during the pandemic.