Two day full body strength training routine

Is there any detriment to doing squat and deadlift on the same day?

It depends. Personally I don't like it. They're both very demanding movements when used in the context of strength training. I feel that doing both dilutes your ability as compared to when they're performed on different days. Generally I'll pair squats with some other hip hinge movement and I'll pair deadlifts with some other squat movement.

Other hip hinge movements include barbell hip thrusts, RDLs, pull throughs, rack pulls, single leg RDLs, swings, etc.

Other squat movements include goblet squats, front squats, reverse lunges, split squats, rear foot elevated split squats, leg presses, etc.

I'll do this stuff in higher rep ranges, which by default, controls the load.

That said, most beginners can likely get away with performing both on the same day since they're not able to generate enough stress (due to lack of strength development) with each movement. Doesn't necessarily mean that you should. I personally wouldn't. But if I were going to, I'd place squats before deads.

Thxs im starting this today

Just remember, this was written specifically for someone else, which means parts of it might not be for you or anyone else given your specific strengths/weaknesses, abilities, mobility, etc.