In an OpenSea clone script, you can have several revenue streams depending on how it is monetized. Here are a few possibilities
Advertising
You can sell ad space on your platform to suitable businesses and advertisers, so you can generate revenue through ads.
Affiliate Marketing
You can earn charges by partnering with other companies and promoting their products and services to your users.
White Labeling
You can offer a white-label interpretation of your OpenSea clone script to other businesses or people who want to run their own NFT marketplaces. This can be a one-time fee or a revenue-sharing model also.
Listing Fees
You can also assess user's fees for listing their NFTs on your marketplace. This can be a one-time fee or a frequent fee, depending on how you structure it.
Premium Features
You can offer gratuity features for a fee, such as featured listings or the ability to upgrade NFTs to a wider audience. This can be a subscription-based model or a one-time fee for each premium feature.
These are just a few examples of how you can monetize an OpenSea clone script. Ultimately, the revenue streams you select will depend on your business model, target audience, and overall goals for the platform.