Tried to fix air conditioning opened valve for freon now won't start. Turns over

Hello, Before throwing any more money and parts at the vehicle, have it diagnosed by a professional. There is no correlation between the engine starting and the A/C except if the compressor is seized. You can test that by removing the serpentine belt (or A/C compressor belt) and starting the engine. If it starts, shut it down and have an A/C repair specialist handle the issue to ensure compliance and proper repair.