query Flows ($project_id: uuid!){
    flow (where: 
        { _and: [
            {project_id: {_eq: $project_id}}, 
            {archived: {_eq: false}} ] 
        })
    {
        id
        flow_group_id,
        name,
        project_id,
        is_schedule_active
    }
}

a or b

or: [{a}, {b}]