2013 Brz Limited Limp Mode
 

We scanned the car and the pending code was P0137

Checked permanent codes and it has
P1235
P2096
P0087

I’m assuming it could the injectors or hpfp? Anyone have experience with these codes or suggestions on what I should do first?

I'd start troubleshooting with the fuel pump in the tank unless you are hearing really bad sounds in the engine bay.

How many miles are on the car?
Where's the last place you stopped for gas?
Any mods?

One of three things 99% due to these codes:
Last gas you put in
HFPF
Fuel pump assembly (basically the regulator, fuel pump,..within the assembly..usually easier and cheaper to get used one from ebay and replaced who assembly).

Easiest way of course is to test for the Fuel pressure by unplugging one of the fuel lines and plug it in to a fuel pressure gauge, turn the car to ACC Mode and wait for a minute if it's holding pressure.

Good luck