Do you mean the PIN7 of 40-pin header as following?
If so, this pin is configured as Input/PD in pinmux spreadsheet by default.
Please configure it as Output/Drive 0 instead
After applying the change for pinmux, please run the following commands to control it HIGH.
$ sudo su
# gpioset --mode=wait `gpiofind "PQ.06"`=1
There’s another thread discussing about this, you can also refer to it.
Issue with GPIO on Jetson Orin Nano with Jetpack 6 - #9 by KevinFFF