We do know that, thankyou. It is not from an instrument giving you a compass heading from which you would have to subtract the runway heading to work it out at a time like that! There is no limit. It depends on the circumstances of the day and the pilot flying. But before it gets to that stage, it is extremely likely that ATC would have closed the runway- they do monitor runway friction and take action! Runway friction measurements are made and passed to tyhe tower- if lower than a certain limit, it is announced to the pilot and may be below his limits for landing.
Either way, it is not that people here 'don't know'. Without being rude, your question is totally impractical, but you seemed unable to accept that. If a skid is detected on one side, the anti-lock brakes will release the brakes on the other side, so there is no basis for your question. It is obvious you have zero experience!