Per example I have 3 different values in my game such as level, gold and XP. All this 3 are being saved without any problem but im afraid oh making to many since I wanted to make one for each quest in-game... Up to how many values can u save in the roblox data? is there even a limit?
According to the wiki you can save a least 260000 characters for data, so if they were all strings you could save as many up to 260000 letters, you are no where near your data limitation so go wild!