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.
To avoid getting scammed in roblox I recommend watching some Roblox youtubers that tell the news on a video (NOT SPONSORED) I recommend watching KonekoKitten, greenlegocats etc (I forgot the other one i watch sometimes) They tell the news and the new scam trends to help you avoid it, my personal experience sometimes in your server while playing a game there will be a bot that joins that says visit this website for free robux like they will try to scam little kids and hack their accounts steal their robux and use that account for scamming. This is a major part on roblox since their Recaptcha bot thingy doesn't really work