How to make a Google sheets drop-down menu control what another cell says

I’m making a guide to a game I play in Google Sheets and I wanted to make a drop-down menu control another cell.

Each option should make a different thing appear in the wanted cell.The drop-down menu is in cell F7 and let’s say the options are “red, orange, yellow, green”

• If the drop-down menu is on ”red”, than cell G7 should say “1 hour”
• If it’s on “orange”, cell G7 should say “3 hours”
• If it’s on “yellow”, cell G7 should say “3 hours, 5 minutes”
• If it’s on “green”, cell G7 should say “3 seconds”

I saw someone else asked a similar question, and the answer said something about functions, but I can’t find where to do that so hopefully someone can either think of another way to do it, or explain better how to find that.