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 as long as it is safe and possible to do so. BC Family Law has provided updated guidance for when children should not go to their other parent. See the BC Family Law COVID-19 Q & A for Parenting. See what the courts have said about COVID and parenting HERE.
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.