You should be getting another email from Upwork regarding your request being successfully processed. The email would contain the actual amount (in Php) that should be transferred to your account in about 1-2 days.
When you receive the notice for your withdrawal request's successful processing, you can expect the funds to be available the next day, usually during the late afternoon or evening. BDO or Upwork will not notify you if the funds are already available, though, so you need to check manually.
LFTs are affected by Philippine holidays and US holidays, so you can expect delays in fund transfers whenever there are national or federal holidays.
Hope this helps!