COVID-19 in itself has nothing to do with ISO 14001. COVID-19 affects humans not the environment. What can happen is that due to COVID-19 new kinds of wastes can appear, and new waste segregation rules may be applied.
Are there any recommendations or changes about rules for disposing existing wastes?
How to treat new wastes like used masks and gloves?
Use of disposable cups and other single use materials?
In any of these situations one may have to determine:
New environmental aspects and impacts;
New or revised procedures for sorting and identifying wastes;
New waste operators for contaminated wastes.
Even if your organization does not provide documented procedures it must provide training in the new practices.