How to walk after tibia plateau fracture fixed with plate?

Tibial plateau. You will usually walk with crutches with no weight on the leg until the fracture heals which can take 6 weeks.
Ask ur OrthopedicDoc. This question should've been addressed by your orthopedic surgeon who operated on you. As part of your hospital discharge instructions, indeed, as part of post-op recovery, physical therapist should have evaluated you & taught you how to walk (presumably w/crutches), how much weight you can bear (if any), etc. Of course, once healed, walk however you want to walk!