Michael and Trevor are put into another tight spot as FIB agents Steve and Dave are asking them to carry out another operation and have them fund it as well. In order to get the money, they plan on stealing the cash from a bank.
This mission will not have any action as it is mostly about planning and preparation.
Here is everything you need to know about the Paleto Score Setup mission and how to get its Gold Medal in GTA 5.
Paleto Score Setup Mission Guide (Gold Medal) – GTA 5

Gold Medal Objectives
Keep in mind the following objectives throughout the level to get a Gold Medal at the end:
- Leisurely Drive: Drive to the bank within 03:30.
- Winner: Win the race back to the meth lab.
Mission Synopsis

The mission starts with Trevor meeting up with Michael at his meth lab. They’ll be having an argument but will be interrupted by FIB agents Steve and Dave. The agents want them to investigate a lab up-state, but they don’t have the funding for it and are forcing Michael and Trevor to come up with the funding they need.
After the cutscene, head on to the car outside and drive Michael and Trevor to Paleto Bay. They’ll meet up with Lester to talk about a possible heist involving a bank.

Once you’re driving with Lester, drive quickly to the bank. Doing so in under 3 and a half minutes is a requisite for the Gold Medal of the mission. Lester will have you drive around the bank to scope it out.
He’ll have you take a look at the front and then have you drive to the empty lot at the back of the bank

Lester needs to find out what kind of emergency response the bank has and suggests they trigger it this one time to find out. Shoot the alarm with a gun to size up the bank’s security measures.

You will then have to move to the gas station opposite of the bank to monitor the police response with Lester’s police scanner. After Lester makes his assessment, Trevor will become impatient and race Michael back to the hideout before police barricade the highways.
You can choose either character to control for this race. Either way, winning the race back to the office will get you the Gold Medal.

Once you’re back at the office, Lester will begin planning the heist on the wall. There will be no alternative ways to do the heist and you can choose an additional man for the job. You can choose between Packie or Chef as they are both good choices.
After the three of them finalize the details of the heist, Michael will leave with Lester and the mission will be over.
ALSO READ: GTA 5: Eye In The Sky Mission Guide (Gold Medal)