How to get SP
Final Fantasy VII Remake's combat system will reward you directly in battle with EXP and AP. EXP helps improve your character, while AP is tied to improving Materia. SP is earned in a different way and is also handled differently.
With EXP and AP, you earn them for trying to upgrade your character or Materia. SP is handled in the opposite way, as you are actually spending your SP to buy upgrades for each of your weapons. This is done in the main menu by going to upgrade weapons, but you actually need a good bit of SP to do this.
Every time you get a new weapon you should have a good number of SPs available, as each weapon is given its own amount as carriers pass through the weapons. Getting more SP is something that will take a bit, as it completely depends on the level of your characters. For every time you level up each character, that respective character will receive 5 SP which can be used to upgrade weapons.
You will eventually reach a point in the game where you will be maxing out your level and not being able to gain more SP this way. At this point, you'll notice that you haven't unlocked all of the weapon upgrades yet.
To get extra SP you need to find all of the manuscripts found around the game. These can be found in a few different places, including those sold by the merchant Moogle, but the majority of them are in Hard mode as a reward. for defeating different bosses. These will reward you with more SP to use, so you will need them to get all the upgrades.
