It's common for bad antivirus software to give false positives on Ren'Py games. They can't tell the difference between Ren'Py and some virus that was probably packaged with some other Ren'Py game ages ago.
Frankly, a lot of anti-virus software on phones is trash (if not an outright scam), and will readily accuse anthing it doesn't have whitelisted as a virus - including simple programming exercises you wrote yourself and know 100% to be harmless.