As a rising influencer, I would say it depends on how many followers you have. For instance if you have less than 10K, i would say 1-2 would be ideal. Of course it could be more than 2 but max is 4 and I would suggest not to post all at once because that would look spammy and you will lose followers. Spread them throughout the day and make sure to add relevant hashtags for more exposure
Hope this help!