If you, your child, or the other parent must be in self-isolation, a court is likely to agree that a child should stay where they are until the need for self-isolation has passed. Otherwise, in general, you must follow court orders for parenting time unless it would increase the risk of contracting COVID-19 for the child, their parents, other members of their household, or the community. BC Family Law has provided updated guidance for when children should not go to their other parent as of June 5, 2020. See the BC Family Law COVID-19 Q & A for Parenting.
It is best that you and the other parent work out a solution together. Consider these guidelines for separated parents sharing custody during COVID-19 and see if you can come up with an arrangement that works. If you need help coming up with an arrangement, you can work with Family Justice Counsellors over the phone or online platforms.
For more resources, Hannah DeJong, a family lawyer with Boughton Law, created COVID-19 Family Law Resources (BC), which includes general information and resources.