I’m going to attempt a speedrun very soon, and I’m on PS5. I can’t figure out how to put a timer on my video so would it be fine if I didn’t put a timer, or if someone knows a way to have a timer please let me know

You’re allowed to run without a timer on screen. The mods actually will time it if you can’t. But I recommend having a stopwatch or something else with you to check your pace through the run.