Amended my 2018 1040 tax return & saved document on another computer. Is there any way to access this pdf now, or do I have to wait until I can access this computer again

Please log back in your TurboTax account and "add a state" to open the return back up (you are not really adding a state, just to open it back up), then select Tools on the left, Print Center and choose the print center, then select returns and choose to print just the tax return or to include all worksheets as well.