When determining what constitutes a large amount of cryptocurrency, it depends on various factors such as wealth, location, background, and personal perception.
Generally, a large amount of BTC is considered to be valued at $10,000 or more, and some may argue that it is anything above $100,000.
It is advisable to allocate 5% to 20% of your total investment capital in BTC, with 5% being safer and 20% being riskier.
To buy large amounts of BTC, you can explore exchanges and OTC broker platforms, making sure to start with smaller investments if you are inexperienced.