To use it, click the download button below, then press Win + R, and paste this in:
%APPDATA%/.minecraft/resourcepacks
After that, copy the downloaded zip file into that folder. There's no need to unpack it, minecraft will do that for you.
To automatically download and install the resource pack on windows, u (probably) can use this command by copying the command, pressing win + r, pasting, and press enter. keep in mind that i havent tested this yet so it might break
powershell -ExecutionPolicy Bypass -Command "& {Invoke-WebRequest -Uri \"https://sleepie.dev/mc_resource_pack/versions/27/§dSleepyFemboi's Pack v27 Universal§r.zip\" -OutFile \"$env:APPDATA\.minecraft\resourcepacks\§dSleepyFemboi's Pack v27 Uni§r.zip\"}"