Was wondering if I should get a pump of some kind and start moving the water under the cover (solid dark blue cover) and add some chlorine.
Probably should just wait.. May just waste bleach and your time. Wasted effort IMO

Best to take cover off and go at it properly..

Shock, vacuum, brush... Keep shock levels up. Continue till you hold chlorine levels overnight... Run filter 24/7...

Get CYA riight and adjust alk.... Then test and adjust PH after a few days....