It looks like you mean SSJR / Super Saiyan Rage in Dragon Soul, not a generic “SSR” form. Based on recent guide videos, you unlock it by first getting Super Saiyan Rage from Goku Black, then raising its mastery until you can access the next tier, which appears to require a Hope Crystal from the cursed Zamasu rift plus about 1,000 raid crystals while transformed into Super Saiyan Rage.

How to unlock it

  1. Get Super Saiyan Rage first. The guide says Goku Black in the city can drop it.
  1. Level up the form’s mastery. You need to progress it until the final tier becomes available.
  1. Defeat the cursed Zamasu rift. The video says this can drop a Hope Crystal, with about a 20% chance.
  1. Collect around 1,000 raid crystals. The guide says you need roughly 999–1,000 raid crystals.
  1. Equip Super Saiyan Rage, then use the item. The video says it only works while you are actively transformed into Super Saiyan Rage.

Important note

A separate Dragon Soul guide shows that some older “Super Saiyan” unlocks are tied to level requirements and story quests, so the exact method depends on which form you meant. For example, Legendary Super Saiyan is unlocked through a level 2,000 story quest line, not the same path as SSJR.

Fast version

  • Farm Goku Black for SSJR.
  • Master the form.
  • Beat the cursed Zamasu rift for Hope Crystal.
  • Gather about 1,000 raid crystals.
  • Use everything while in Super Saiyan Rage.

If you want, I can also turn this into a super short step-by-step Roblox grind checklist.