Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
This is a real tip on how to get robux so you better read it all
Ok what you need to do is find a dev group in roblox thats looking for people who know how to make shirts or games, its easy to find some of these groups there are lots of ads for it.
Requirements:
Computer
Skills in Editing Software
atleast a talent for designing
also knowing how to use roblox studios may also help cause some groups need people who knows how to use it
Basically what you need to do is design shirts and give it to the group leader he will then post the shirts and give you some of the money your shirt earns this is one of the best ways to get robux for free
But be careful cause some groups can scam you and steal your shirt
try taking screenshots of the shirt you made and if they scam you report it to roblox and show the screenshot as proof