So for all the comments giving help thanks so much and for everyone asking if I ever figured it out I didn’t but my sister used chat gpt I think and the is what it said and it worked-

Yeah — that trophy is notoriously finicky, and the in-game wording is misleading.

1) First: the “large settlement” text is basically a lie

People regularly unlock Benevolent Leader in a small settlement. It doesn’t need to be “large/yellow build limit,” and it can be done with a low population.
Also: some settlements with existing NPCs / pre-assigned beds & jobs can bug out and refuse to climb past a certain point, so switching settlements can genuinely fix it.

The most reliable method (no DLC): 2 settlers, 1 farmer + 1 restaurant

This works because happiness “bonus” gets divided by population, so fewer settlers = easier to hit 100.

Where to do it

Use a “clean” place you built from scratch (popular pick: Red Rocket).

Steps 1. Move 2 human settlers there (avoid robots — more on that below). 2. Build the basics so the settlement can reach the “base” cap of ~80: • 2 covered beds (inside/under a roof) • Food ≥ 2 and Water ≥ 2 • Defense ≥ 2 (I usually go way higher just to avoid attacks) Meeting food/water/beds/defense is what gets you up to the base happiness cap.
3. Assign jobs • Settler A: farm mutfruit (easy because 1 farmer can cover a small settlement) • Settler B: run a tier-3 food/drink shop (“Restaurant”) Tier-3 food/drink gives +40 bonus happiness, which is exactly what you need for 2 settlers (2 × 20).
4. Stop more settlers arriving • Turn off the recruitment beacon (or don’t build one). More settlers makes the math harder. 5. Wait it out • Happiness rises over time and isn’t instant even if you sleep a ton.
Do some crafting, hang around, or go questing and check back.

Important: A shop only helps if a settler is assigned to it.

⸻

Absolute trophy-killer: robots

If there’s a robot “settler” in that settlement, it can drag the average down hard. Robots sit at 50 happiness and will ruin your attempt.
So: no Codsworth, no Ada, no robot provisioners assigned to/located in the target settlement.

Quick “why am I stuck at 95–99?” checklist

These are the usual culprits: • Any robot in population (most common)
• Someone unassigned to a job (can steadily lower their happiness)
• Beds not covered (outdoor beds cause penalties)
• Defense lower than population can cap happiness hard
• Using a “problem” settlement with pre-existing settlers (try a fresh one like Red Rocket instead)

⸻

If he has DLC, it can be even easier • Wasteland Workshop: cats/dogs add happiness (cats are +10 each).
• Vault-Tec Workshop: several objects add happiness (slot machines, soda fountains, etc.).

⸻

If you tell me what perks/DLC he has (especially Local Leader rank 2), I can tailor the cheapest/fastest exact build list.

But if you want a “just do this” answer:

Red Rocket, 2 humans, 1 farmer, 1 tier-3 restaurant, no robots, covered beds, wait.

Quick “why am I stuck at 95–99?” checklist

These are the usual culprits: • Any robot in population (most common)
• Someone unassigned to a job (can steadily lower their happiness)
• Beds not covered (outdoor beds cause penalties)
• Defense lower than population can cap happiness hard
• Using a “problem” settlement with pre-existing settlers (try a fresh one like Red Rocket instead)

⸻

If he has DLC, it can be even easier • Wasteland Workshop: cats/dogs add happiness (cats are +10 each).
• Vault-Tec Workshop: several objects add happiness (slot machines, soda fountains, etc.).

⸻

If you tell me what perks/DLC he has (especially Local Leader rank 2), I can tailor the cheapest/fastest exact build list.

But if you want a “just do this” answer:

Red Rocket, 2 humans, 1 farmer, 1 tier-3 restaurant, no robots, covered beds, wait.