6 weeks post beard transplant - skin redness / discolouration. I don't have access to my surgeon so need answers here (Photo)

Redness may be a sign of infection.  If you don't have access to your doctor, go see another doctor in person.  You cannot receive treatment on the Internet. 

To develop redness a few weeks after transplant is mildly concerning, since from what you described I don't think it's from the exposure to sunlight since you were outside so little. Contact your doctor about a possible infection or other issue, since this doesn't seem like typical post-transplant redness.

It appears you may have developed folliculitis.   I would reach out to your surgeon or another doctor to take a close look and treat accordingly.